He also wants to know_ some way to help people swim faster. [ ]A.is there B.if there isC.that there
A. is there B. if there is C. that there is D. why there is
题目简介
He also wants to know_ some way to help people swim faster. [ ]A.is there B.if there isC.that there
题目详情
A. is there
B. if there is
C. that there is
D. why there is
答案