问题补充：
He to the lab than he set out to do the experiment.
A. has no sooner got
B. no sooner got
C. will no sooner get
D. had no sooner got
答案：
A. has no sooner got
B. no sooner got
C. will no sooner get
(答案→)D. had no sooner got
解析：no sooner… than是一固定搭配,意思是“一……就……”,其时态为从句中用一般过去时,主句中用过去完成时,相同的结构还有hardly /scarcely…when…?答案为D?
