Only when _____ to explain ____ the reason for this. [ ]A. did he start; she
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| Only when _____ to explain ____ the reason for this. |
| [ ] |
A. did he start; she realized
B. he started; did she realize
C. did he start; she had realized
D. he started; had she realized |
答案
| B |
举一反三
| Bill wasn"t happy about the delay of the report by John, and ____. |
| [ ] |
A. I was neither
B. neither was I
C. I was either
D. either was I |
| that they may eventually reduce the amount of labor needed on construction sites by 90 per-cent. |
| [ ] |
A. Such construction robots are clever
B. So clever the construction robots are
C. So clever are the construction robots
D. Such clever construction robots are |
| Never before ______ in greater need of patience and courage than today. |
| [ ] |
A. have you been
B. you have been
C. were you
D. you were |
| ______ that Mary was able to set up new branches everywhere. |
| [ ] |
A. So successful her business was
B. So successful was her business
C. So her business was successful
D. So was her successful business |
| Not until the man in black took off his dark glasses _____ that he was the famous film star. |
| [ ] |
A. did I realize
B. I realized
C. was I realized
D. I have realized |
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