she promised she ( )do better work.A wouldB willC shallD is going to

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she promised she ( )do better work.A wouldB willC shallD is going to
she promised she ( )do better work.
A would
B will
C shall
D is going to

she promised she ( )do better work.A wouldB willC shallD is going to
would .宾语从句中 ,主句是过去式 ,从句也要用过去式 .主句是现在式时,从句时情况而定,该是什么时态就是什么时态.此举中主句中的谓语动词promised是过去式 ,所以从句也要是过去式,除了would,其他的时态都不对

我觉得应该选A

a

A

A 主从句时态要一致。

A promised过去式

A would

A

A would