问题
选择题
It’s hard to rescue drowning people because they ________ so much.
A．sink
B．swim
C．jump
D．struggle
答案
答案：D
由句意和常识推知。
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It’s hard to rescue drowning people because they ________ so much.
A．sink
B．swim
C．jump
D．struggle
答案：D
由句意和常识推知。