What/which they did for others.中文

What/which they did for others.中文 What/which they did for others.中文what which在这里起什么作用 They did not say which they wanted .为什么不用what 请分析一下成分. what did they what did they play? then what did they We don't know ( ) they did it.A.how B.who C.what D.which what did they go back What did they do yesterday? what did they do next? I () what they did yesterday what did they do finally? what did they do first? What did they for lunch? By what means did they get the information?这里的what可以换成which吗?为什么呢 they did not know which end was We don't know ______ they did it .A.how B.who C.what D.which 急用 They asked me_I did well in my English exam.A.what B.when C.if D.which