题目内容
. Not until _______ smoking ________ healthy lungs.
A. did he five up, he had B. did he give up, did he have
C. he gave up, he had D. he gave up, did he have
D
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Not unti his fellows criticized him _______ to admit his mistake.
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A．does he begin |
B．did he begin |
C．began he |
D．had he begun |
Not unti his fellows criticized him _______ to admit his mistake.
| A．does he begin | B．did he begin | C．began he | D．had he begun |