问题
选择题
You ____ him so closely; you should have kept your distance.
A.shouldn't follow
B.mustn't follow
C.couldn't have been following
D.shouldn't have been following
答案
答案:D
You ____ him so closely; you should have kept your distance.
A.shouldn't follow
B.mustn't follow
C.couldn't have been following
D.shouldn't have been following
答案:D