A-A+
______ for you help we' d never have been abl
问题详情
______ for you help, we" d never have been able to get over the difficulties.
A．Had it not been
B．If it were not
C．Had it not
D．If we had not been请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：本题主句的谓语为wouldneverhavebeenableto...，表示过去的虚拟情况，因此，从句中的谓语表示的也应为过去的虚拟情况，谓语动词应为had+过去分词。
