Did Peter fix the computer himself?-He _______ ,because he doesn't know much about computers.Did Peter fix the computer himself?-He _______ ,because he doesn't know much about computers.A.has it fixed B.had fixed itC.had it fixed D.fixed it为什么选C不选A呢?

问题描述:

Did Peter fix the computer himself?-He _______ ,because he doesn't know much about computers.
Did Peter fix the computer himself?
-He _______ ,because he doesn't know much about computers.
A.has it fixed B.had fixed it
C.had it fixed D.fixed it
为什么选C不选A呢?

因为提问题的时态是一般过去时,答句也得是过去,have的过去式是had,所以统一变为过去形式
明白?