... 3. ’ll 4. borrow 5. back Exercise 27 1. to go 2. to 3. come 4. borrow 5. to go Exercise 28 1. change 2. second 3. look 4. got 5. afraid 6. way 7. stranger Exercise 29 memory information ... Exercise 22 Đáp án 1 07 4. The President and his wife have just arrived in Canada for a three-day visit. 5. What were you doing when the children came/ arrived home? Exercise 7 1. some 2. too ... a coin to a baby, it/ he or she may swallow it. 6. If you smoke in bed, you may start a fire. 7. If a child walks around with a pencil in its mouth, he or she may fall and hurt him or herself....