1. She has set a new record, that is, the sales of her latest book ________ 50 million.

　　A. have reached B. has reached

　　C. are reaching D. had reached

　　2. He kept looking at her, wondering whether he ________ her somewhere.

　　A. saw B. has seen

　　C. sees D. had seen

　　3. The crazy fans ________ patiently for two hours and they would wait till the movie star arrived.

　　A. were waiting B. had been waiting

　　C. had waited D. would wait

　　4. She ________ her hairstyle in her hometown before she came to Chongqing for a better job.

　　A. would change B. has changed

　　C. changed D. was changing

　　5. The first use of atomic weapons was in 1945, and their power ________ increased enormously ever since.

　　A. is B. was

　　C. has been D. had been