题目内容
--Don't be so disappointed.I’m sure that you can do better in the next exam.
--Yes, but I ____ this time.
--Yes, but I ____ this time.
| A.should be more careful | B.could be more careful | C.should have been more careful |
| D.must have been more carefully |
C
should have done是常用句型,意思是:本应……
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