No one tell us __¸so we need your help.A how should we do.B what should we do

问题描述:

No one tell us __¸so we need your help.A how should we do.B what should we do
C how to do it D what to do it

C
宾语从句是陈述语序,故排除A与B,而D错的原因是多了一个ITC 中的it是主语吗不是,是DO的宾语( 记住:how to do it = what to do ,因为HOW是疑问副词,不能作DO 的宾语,故要加IT,而WHAT是疑问代词,可用DO 的宾语,故D中的it 是多余的)