David is such a good boy _______ all the teachers like. 
#70458
A
that
B
who
C
as
D
whom
推荐题目
—Are you free this Sunday?— Yes. If it_____ , I will go shopping with mum.
#41109
A
won’t rain
B
isn’t raining
C
doesn’t rain
D
didn’t rain
If I        you, I           the army.
#41188
A
am, would join
B
were, would join
C
am, will join
D
were, will join