... holiday to Egypt. Last year, for example, about one and a half million (1) _____ visited Egypt. The (2) _____ of Egypt is about fifty million and the (3) _____ is El Qahira (Cairo), a busy city of ... Pasteur _____ in the 19th century. a. was living b. lived c. had lived d. has lived 3. Since 1 980, scientists the world over _____ a lot of things to fight against AIDS. a. have done b. are doing...