You _____ have bought the book for me, but thank you all the same.
| A．shouldn’t | B．needn’t | C．can’t | D．mustn’t |
What shall we use for power when all the oil in the world has ________？
| A．given out | B．put out | C．held up | D．used up |
Don’t ________ more work than you can do, or you will ________.
| A．take over; break in | B．take on; break down |
| C．take over; break off | D．take on; break in |
Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom first appears.
| A．treated | B．to be treated |
| C．being treated | D．be treated |
To improve their oral English, everyone in the class is supposed to ________ actively in these discussions.
| A．participate | B．attend | C．enter | D．take |
— Jack, Jane seems unhappy?
— Don’t worry, a funny story will ________ her.
| A．amuse | B．meet | C．tease | D．fool |