问题补充：
it for your help，I couldn have made any progress．
A. Had；not been
B. Should；not been
C. Did；not been
D. Not；be
答案：
(答案→)A. Had；not been
B. Should；not been
C. Did；not been
D. Not；be
解析：考查虚拟语气的省略：句意：要不是你的帮助，我不会取得进步的。如果条件句中有were,had,should 等助动词，可将if省略，而把were,had或should，置于句首,来表达以if引导的条件句的相同意思。根据后面的主句I couldn have made any progress．可知这里是had it not been for your help相当于If it hadn’t been for your help。选A。
