问题
The question that puzzled them is ____ they can getrid of the air pollution in the area
A:which
B:that
C:whom
D:where
B:that
C:whom
D:where
正确答案是：
同类题型
What happened over there?— They argued______ the waiter______ the price of the meal
Whoever leaves the room last must make sure________all the windows are shut.[ ]
____ you ever_____ the new Minyuan Stadium — No, I haven’t.
Whose hair band is this, do you know– It ________ Linda. You know, she always wears one.