问题
选择题
39. Thank you for your help. ______ for your help, I wouldn’t have succeeded in my experiment.
A．If it is not
B．Were it not
C．Had it not been
D．If they were not
答案
C
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39. Thank you for your help. ______ for your help, I wouldn’t have succeeded in my experiment.
A．If it is not
B．Were it not
C．Had it not been
D．If they were not
C