By the time he realizes he _____ a mistake, it" ll be too late for him to change

题型：河北省期末题难度：来源：

By the time he realizes he _____ a mistake, it" ll be too late for him to change his mind.     [     ]
A. makes
B. made
C. has made
D. had made

答案

举一反三

It is the first time I _____ visitors since I moved to London.[     ]
A. had had
B. have had
C. have
D. had

题型：月考题难度：| 查看答案

Tom ______the girl that he ______four years ago.[     ]
A. married, engaged
B. was married to, was engaged
C. has been married to, was engaged to
D. married with, was engaged in

题型：安徽省月考题难度：| 查看答案

— Cathy, I have cleaned the room for you.
— Thanks. You _____ it. I could manage it myself.  [     ]
A. didn"t need to do
B. needn"t have done
C. mustn"t do
D. shouldn"t have done

题型：山东省期末题难度：| 查看答案

— Look!  Somebody ________ the sofa.
— Well, it wasn"t me. I didn"t do it.       [     ]
A. is cleaning
B. was cleaning
C. has cleaned
D. had cleaned

题型：专项题难度：| 查看答案

— I remember you were a talented pianist at college. Can you play the piano for me?
— Sorry, I ________ the piano for years. [     ]
A. don"t play
B. wasn"t playing
C. haven"t played
D. hadn"t played

题型：专项题难度：| 查看答案