问题
The rubbish _____ is produced every day is becoming a serious problem in cities around the world.
A:that
B:who
C:where
D:whom;
B:who
C:where
D:whom;
正确答案是：
同类题型
The Australian boy has a good ________ of Chinese and can communicate with others freely.
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In the police station I saw the man from ________ room the thief had stolen the TV set.
The West lake is so beautiful. I want tostay in Hangzhou for _______ two days.