问题
选择题
He also wants to know _ some way to help people swim faster. [ ]
A. is there
B. if there is
C. that there is
D. why there is
答案
答案：B
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He also wants to know _ some way to help people swim faster. [ ]
A. is there
B. if there is
C. that there is
D. why there is
答案：B