情态动词专项练习
1. Jean
have kept his promise. I wonder why he changed his idea.
A. must
B. should
C. need
D. would
解析：选
B. “should have +
过去分词
”表示“过去本来应该
(但没能)做某事”；keep one’s promise
意为“信守诺言
”。2. Jane
have come to the party, but she
not find the exact time.
A. could; could
B. might; could
C. should; could
D. should; would
解析：选
A.“ could have+
过去分词表示过去本来应该
(但没能)做某事”。3. So many mistakes in your homework! You
more careful.
A. may be
B. had to
C. would be
D. should have been
解析：选
D. “You should have been  ...