Question

If my lawyer ______ here last Friday, he _____ me from telling the truth.

1. A.
   had been; would have prevented
2. B.
   had been; would prevent
3. C.
   were; would prevent
4. D.
   were; would have prevented

Answer 1

A
考查虚拟语气。根据时间状语last Friday，说明指的是过去的情况，所以if引导的从句要用过去完成时，而主句要用助动词+现在完成时。所以选A。