6.　　　 Once _________, the clock will go half a month and keep good time.

A. start　　　　　　 B. to start　　　　　　　 C. started　　　　 D. starting

5.　　　 I saw no more than on bike in that shop. Will you go and buy _________?

A. some　　　　　 B. one　　　　　　 C. it　　　　 D. any

4.　　　 It is such a good place __________ everybody wants to go and visit ___________ it is well-known all over the world.

A. that…that　　　　　 B. as…as　　　　 C. as…that　　　　　　 D. that…as

3.　　　 ---Is he all right now?

---Yes. Who __________ that such a serious illness could be cured?

A. has thought　　　　 B. had thought　　　　　　　 C. was thinking　　　　　　 D. would have thought

2.　　　 ---Was Tom there when you arrived?

---Yes, but he _________ home soon afterwards.

A. had gone　　 B. has gone　　 C. is going　　　 D. went

1.　　　 Proper first aid can save a seriously injured person, especially when he is bleeding heavily or ___________.

A. has poisoned　　　 B. has been poisoned　　 C. was poisoned　　 D. is poisoning