Question

We asked six students what ______ yesterday.

A．do they do	B．did they do
C．they did	D．they do

Answer 1

C

此题重点考查宾语从句的时态和语序问题，无论哪种句式结构充当宾语从句都要用陈述句语序，从句的时态要和主句的时态保持一致。因主句的谓语动词是过去式从句的谓语动词也要用相应的过去时态。