2. Although many people don’t know who _______ the computer, it really makes life colorful.

A. find　　　　　　　　　 　　　 B. found

C. invented　　　　　　　　　 D. discovered　

1. The 29^th Olympic Games _______ in 2008 in Beijing.

A. are held 　　　　　　　　　 B. was held　　

C. will be held　　　　　　　　　　 D. held

5. There was a beautiful l_______ about the stone.

4. We didn't n_______ that he had entered the room.

3. Don’t s_______ too much salt into the sugar.

2. Many a_______ stories were all interesting.　

1. Our country really should i________ a kind of machine that can predict the earthquake.

30. We ____there when it____to rain.

　 　　 A. were getting-would begin 　　 B. were about to get-began

　 　 C. had got-had begun　　 　　　　 D. would get-began

29. The teacher said that we ______ten lessons by the end of this term.

　 　　 A. should study　　　　 　　　　　　 B. have studied　　　

C. were going to study　　　 　　　　　　 D. should have studied　

28. The foreign friends _____here just now.　　　　

A. left　　　　　　　　　　 　　 B. have left　　　

C. have been away from　　　 　　 D. had left