--What’s the problem with the car? Have you checked the engine?
--Yes, I did twice; there _________ be anything wrong with the engine.
| A．won’t | B．needn’t |
| C．mustn’t | D．shouldn’t |
相关试题
The light is still on. They ___ to turn it off when they left the room.
| A．must forget | B．could have forgotten |
| C．may forget | D．must have forgotten |
I often have conversation with John over _____ phone, but keep in touch with Tom by writing
_____ letters.
| A．/; the | B．/; a | C．the; / | D．the; a |
Whenever I was in trouble, he would do what he could _____ me.
| A．help | B．helping | C．to help | D．helped |
The speaker raised his voice but still couldn’t make himself ______.
| A．heard | B．to hear | C．hearing | D．he ar |
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