Milk wants to know if______a picnic tomorrow.
__Yes.But if it_____,we'll visit the museun instead.
A.you have;willrain B.you will have;will rain
C.you will have;rains D.will you have;rains
答案：C
第一个if表示“是否”,第二个if表示“如果”,引导条件状语从句,从句用一般现在时.
I wonder________.
A.how much cost these shoes B.how much these shoes cost.
C.how much do these shoes cost D.how much are these shoes cost
答案：B
how much引导宾语从句,从句用陈述句语序.
I really want to know_______.
A.where did he go yesterday B.how will he go to Beijing tomorrow
C.if had he bought that car D.what is worng with my brother
答案：D
I don't know ______ther have passed the exam.
A.what B.if C.what D.when
答案：B 是否
I don't know_____he still lives here after so many years.
A.whether B.where C.what D.when
答案：A 是否、