6
从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
例：Its so nice to hear from her again ，we last met more than thirty years ago．
A．Whats more B．Thats to say C．In other words D．Believe it or not
答案是D。
21．Although badminton is my favorite sport，I am not very good player
A．the；a B．the；the C．／；a D．／；the
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