【题目】No sooner _____ a paper on his latest research than he was asked to write another for the program.
A.he had finishedB.he finished
C.had he finishedD.he did finished
在线课程【答案】C
【解析】
考查部分到装。句意：他刚写完一篇关于他最新研究的论文，就被要求为这个项目再写一篇。本句考查固定句型结构“no sooner… than …”，意为“刚一…就…”。该结构中主句用过去完成时，从句中用一般过去时，No sooner置于句首时，主句中用倒装形式，故选C。