题目内容
—May I smoke here ?
—If you ____, choose a seat in the smoking section.
—If you ____, choose a seat in the smoking section.
| A.should | B.could | C.may | D.must |
D
must在这两道试题中均表示“非得,偏要”。
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题目内容
| A.should | B.could | C.may | D.must |