My friend said chocolate was his favorite and____ he felt happy after having it.A that B which C why D when_____the writers consider most important is the quality of the work.rather than the quantity.A That BWhich C Why D What最好先告诉我他们分别是定语从句还是同位语从句,咋判断的,然后咋做

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1 是宾语从句。 的答案是THAT.因为said的後面是两个陈述句，第一个that被省略了：
My friend said THAT chocolate was his favorite
and
he said THAT he felt happy after having it.

2 的答案是D . 这是主语从句。这里what == the thing that / which

WHAT the writers consider most important -------这是主语从句部分。

1、A 感觉题目有点问题，用排除法只能选A
2、D What 引导的主语从句

1.A,宾语从句.chocolate was his favorite与____ he felt happy after having it.是两个并列的宾从.前句的that可省
2.D,主语从句.从成分分析,____the writers consider most important 是主语,is 是谓语,the quality of the work.rather than the quantity.是表语.在分析主语从句中,consider 后缺少宾语,所以选D.