问题
There are a number of cases _______ family members or friends quarrel with each other and become enemies.
A:that
B:which
C:where
D:when
B:which
C:where
D:when
正确答案是：
同类题型
Is this ______ ID card—No. It’s ______ book.
re anything I can do for you, sir—___________ But I’m being served
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ce, too，the Red Cross is expected to send help _____there is human suffering.