I met a few friends of mine, one of ____ is a singer. 
#70033
A
him
B
them
C
who
D
whom
推荐题目
The clock was striking twelve ______ down the street. 
#74557
A
because I walked
B
as I walked
C
since I was walking
D
while I was walking
 Before Chinese Chang’e-2, the US sent up a space probe (探测器) to hit the moon to see ______.
#69622
A
whether there was water on it
B
whether was there water on it
C
whether on it was there water
D
whether was water on it