题目内容
--- I am going to the dentist at 4 o'clock and it is 3:30 now.
--- Well, if you ______ leave earlier today, please ask the director for permission.
- A.can
- B.may
- C.must
- D.will
C
考查情态动词。must在这里是“偏要”的意思。故选C。
考查情态动词。must在这里是“偏要”的意思。故选C。
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