几道英语题目,要解析1、Can I help you?Yes,do you know-A when comes the

几道英语题目,要解析
1、Can I help you?
Yes,do you know_
A when comes the bus
Bwhen will come the bus
C when does the bus come
D when the bus comes
2He had no idea how difficult the experiment would be _
he was half.
Auntil Bwhile C after D when
3It wasnt as good a dinner _she had promised us.
A as B that C which Dwhat
4\The idea that the earth is flat was_centuries ago.
A appointed
Brejected
C hesitated
D measured

1D陈述句语序2A not until..句式 3as as..as比较句式 4 b 地球是平的这一想法几个世纪前就不被人们承认了.
希望对你有所帮助.