一些英语问题,越快越好

问题描述:

一些英语问题,越快越好
1、Henery killed the dog.I"ll ask him why _D__
A did he do that B he did that C he did D he hans done so
2 I am sure__D__he said is true.
A that B about that C of that D that what
3 Mary is __C__ someone might recognize her.
A afraid of B afraid about C afraid that D afraid for
4 They came to the conclusion__A__by a computer.
A that not all things can be done B because of not al things be done
C being not all things can be done D because not all things can be done
5 Why the explosion occurred was__D__the laboratory attendant had benn careless.
A for B because C since D that
帮我解释一下为什么选这些选项,分值很高的

1.因为killed the dog是过去动作,在我问他之前,"他已经这样做了",因此要用现在完成时he has done so.2.I am sure+that从句,是一个固定结构,再:在that从句中__he said 是一个句子来做主语,叫主语从句,这个主语从句缺...讲的很详细 谢谢啦 还有 那个第一题的答案是A 我打错了 能再解释一下吗??第一题的答案不能用A, 因为在任何从句中都要使有陈述句语序.而A不是陈述句语序.在我看来,B he did that答案比D更好.强调"当时他为什么要那样做."