题目内容
--- Oh my god! You ______ wear slippers to attend the conference.
--- I'm sorry I forgot there is a conference.
A.must B.can C.should D.shall
C
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--- , but are you forgetting something?
--- Oh, my God. We haven’t fix our next meeting yet.
| A.I’m sure | B.I’m afraid so | C.Take care | D.Excuse me |