【各位帮我检查一下这几道高中英语题】

【各位帮我检查一下这几道高中英语题】
各位帮我检查一下这几道题做得对不对。。如果有错请帮我订正一下,说便说明一下理由..懒羊羊在此感激不尽..最好解释的容易懂一点(对的就不用解释了)
1. They did____save he wounded soldiers.
A.what they could B.that they could do C. all that they could D. all that they could do
我选D
2. The boy is so angry at all___she said__he couldn’t control his temper.
A. that,that B.what,that C.that,what D.what,what
我选C
3. who is the scientist__is to give us a talk on space tomorrow?
A. that B.who C.which D.whom
我选A
4. All the flowers now raised here have developed from those__in the forest.
A.once they grew B.they grew once C.they once grew D.once grew
我选D
5. Little has been done___is helpful to our work.
A. what B.whichCthat D。all that
我选C
6．The days ___we spent in Beijing are not easy to forget.
A.when B.which C.who D.on which
我选A
this is MR.Smith,___i think has something interesting to tell you.
A.which B.who C.that D.whom
我

帮我检查一下 帮我检查一下java 请各位英语高手帮我检查一下翻译的对不对 再帮我检查一下，VV 谁帮我检查一下？？？？？？中译英阿~~~~~~~~~~~~ 帮我检查一下有无错误。 请帮我检查一下作文 高人帮我检查一下 ~~ 拉拉~~ 帮我检查一下英语句子 帮我检查一下语法错误好吗