—Look!Mrs.Smithisstandinginfrontoftheteachingbuilding.—...
来源：语文精选馆 1.97W
问题详情：
—Look! Mrs. Smith is standing in front of the teaching building.
—It______ her. She has gone to Egypt for her holiday.
A. must be B. mustn’t be C. can be D. can’t be
【回答】
D
知识点：情态动词
题型：选择题
