. Mary _____ be in London because I saw
题型:选择题
问题:
. Mary _____ be in London because I saw her in town just now.
A.mustn’t
B.isn’t able to
C.needn’t
D.can’t
. Mary _____ be in London because I saw her in town just now.
A.mustn’t
B.isn’t able to
C.needn’t
D.can’t