Use the proper tense/form of verbs in parentheses. Write your answer in the space provided The world is getting warmer and the oceans are rising. Why ……… this (1. happen) . One answer is that it could simply be part of a natural process. After all, there (2. be) . ice ages and long periods of warmth, so we could just (3. experience) . another warming trend. This kind of answer (4. have) . more supporters a few years ago. What scientists now (5. believe) . is that human activity is the cause. For more than two hundred years, human ……………… gradually (6. change) . the atmosphere, mainly as a result of industrial pollution. We (7. create) . an atmosphere around the earth that, like a giant glass container, (8. let) . heat from the sun through and then (9. hold) . it in. …………… temperatures and sea levels (10. keep) . rising? The general answer is unfortunately yes Use the proper tense/form of verbs in parentheses. Write your answer in the space provided The world is getting warmer and the oceans are rising. Why ……does… this (1. happen) happen . One answer is that it could simply be part of a natural process. After all, there (2. be) .is ice ages and long periods of warmth, so we could just (3. experience) .experience another warming trend. This kind of answer (4. have) had . more supporters a few years ago. What scientists now (5. believe) believe . is that human activity is the cause. For more than two hundred years, human ……………has changed… gradually (6. change) . the atmosphere, mainly as a result of industrial pollution. We (7. create) create . an atmosphere around the earth that, like a giant glass container, (8. let) let . heat from the sun through and then (9. hold) .hold it in. …………… temperatures and sea levels (10. keep) .keeps rising? The general answer is unfortunately yes. Read the following texts carefully and choose the correct tense of the verbs. I. My friends - Hong and Lien just (return) . from their holiday in Da Lat. Before they (leave) . Quang Ngai, I (give) . them my aunt's address in Da Lat in the hope that they (visit) her and her family. Last Tuesday night, I (come) . to see them, and they (tell) . me how much they (enjoy) . travelling around Da Lat, and I (look) . at the colour photos they (take) . They also gave me the postcards and presents from my aunt and said that it (be) a great pleasure for them to meet my relatives. II. Jane lives in London. She (work) . as a travel writer for a magazine. She (go) . abroad five or six times a year. Last year, she (spend) . three months in Asia and she liked it so much that she (not want) to come home. Now she (travel) in South America. She (not speak) . Spanish very well, but she (study) . it at the moment because she (need) . to talk to local people. She (read) . a lot of books in French up to now. Every evening she (write) . notes about people and places. III. "You wont recognize the old town", my ss told me. "Almost everything (change) . since you last (see) . it. They (build) . a new shopping centre near the park. The old town hall (destroy) . by a fire about five year agos. Thet (build) . a new one at the moment. They (build) it for three years in fact, but they (not finish) . it yet". I (be) . back for nearly a month now. And my ss was right. The place looks very different, but strangely enough it still (feel) . the same, because the people that I love are here. I (leave) . again in a few week's time., but I know that even if I (be) . away for twenty years again, this always (be) . my home. . My friends - Hong and Lien have just returned from their holiday in Da Lat. Before they left Quang Ngai, I had gave them my aunt's address in Da Lat in the hope that they would visit her and her family. Last Tuesday night, I came to see them, and they told me how much they had enjoyed travelling around Da Lat, and I looked at the colour photos they had took. They also gave me the postcards and presents from my aunt and said that it had been a great pleasure for them to meet my relatives. II. Jane lives in London. She works as a travel writer for a magazine. She goes abroad five or six times a year. Last year, she spent three months in Asia and she liked it so much that she did not want to come home. Now she is travelling in South America. She does not speak Spanish very well, but she is studying it at the moment because she needs to talk to local people. She has read a lot of books in French up to now. Every evening she writes notes about people and places. III. "You won't recognize the old town", my ss told me. "Almost everything has changed since you last saw it. They built a new shopping centre near the park. The old town hall was destroyed by a fire about five year agos. They are building a new one at the moment. They have built it for three years in fact, but they have not finished it yet". I have been back for nearly a month now. And my ss was right. The place looks very different, but strangely enough it still feels the same, because the people that I love are here. I will leave again in a few week's time., but I know that even if I will be away for twenty years again, this always is my home.