Protect your hearing. Don’t wait until you ________ hear a thing.
| A． |
needn’t |
B． |
mustn’t |
C． |
shouldn’t |
D． |
can’t |
相关试题
— Excuse me , do you have any comic books?
—Sorry, I don’t have . Ask Rose. I think she has .
| A．some; some | B．any; any |
| C．any; some | D．some; any |
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