---Look at these tracks. It _____ be a wolf.”
---Don’t be so sure. I think it _____ be a fox.
| A．must; could | B．may; might | C．need; must | D．could; need |
相关试题
The old temple _______ roof was damaged in storm is now under repair.
| A．where | B．which | C．of which | D．whose |
Listen! Do you hear someone __________for help?
| A．calling | B．having called | C．to call | D．called |
Eating too much fat can ________ heart disease and cause high
blood pressure.
| A．contribute to | B．come across |
| C．depend on | D．leave out |
Mr. Lee, may I ask you a question?
—______.
| A．It’s a pleasure | B．Go ahead |
| C．With pleasure | D．So do you. |
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