Question

No sooner _____ the news than they rushed out into the street.

1. A.
   they heard
2. B.
   they had heard
3. C.
   did they hear
4. D.
   had they heard

Answer 1

D
考查时态题。No sooner …than…在这个句型中，前面应用过去完成时，后面从句中应用过去时。；另外，No sooner位于句首，应用部分倒装。故答案为D。