题目内容
－May I smoke here?
－If you ________, choose a seat in the smoking section．
[ ]
A．
should
B．
could
C．
may
D．
must
答案：D
解析：
解析：
|
if you must(do sth．)表示允许但不赞同，意为“如果你一定要/必须那么做”。 |
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