很高兴为您
正确答案是D D B
这里考察的是从句的句子结构.
在do you know,I don't know,tell me等等动词后接的从句,句子结构应该用陈述语序
即“引导词+主语+谓语+宾语”
2 Do you know _______________?你知道他是谁吗?指“人”,用who
3 很显然,只有D
4 Could you tell me how we can get to the plane?
由回答Certainly,go straight along here可知是问如何去,所以用how
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