问题
选择题
Today, we'll discuss a number of cases ____ parents have much difficulty in communicating
with their children.[ ]
A. which
B. that
C. where
D. why
答案
答案：C
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Today, we'll discuss a number of cases ____ parents have much difficulty in communicating
with their children.[ ]
A. which
B. that
C. where
D. why
答案：C