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一道英语选择题10Seeingthattheyareverybusy,wechoosetoleavequicklyincasewebeintheway.A.mustB.canC.shallD.shouldWHY?

题目详情
一道英语选择题10
Seeing that they are very busy,we choose to leave quickly in case we __be in the way.
A.must
B.can
C.shall
D.should
WHY?
▼优质解答
答案和解析
D.should