813.The weather turned out to be fine yesterday,I ______ the trouble to carry my umbrella with me.
A.should have taken
B.could have taken
C.needn't have taken
D.mustn't have taken
814.Must he come to sign this paper himself?
Yes,he ________.
A.need
B.must
C.may
D.will
813.答案是C;needn't have done本不必做而做了。
814.答案是B;must开头的问句，肯定回答仍然用must。
