21人参加乒乓球单打淘汰赛,只取第一名,共比多少场可决出冠军?A.10 B.19 C.11 D.20

21人参加乒乓球单打淘汰赛,只取第一名,共比多少场可决出冠军?A.10 B.19 C.11 D.20

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The reason ______ I have to go is ______ my mother is ill in bed.A. why; why B.

The reason ______ I have to go is ______ my mother is ill in bed.A. why; why B.

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--Do you mind if I ______ the TV a bit?--Yes, I do, because I'm busy with ...

--Do you mind if I ______ the TV a bit?--Yes, I do, because I'm busy with ...

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--I wonder why Mary is so unfriendly to us.--She is ______ than unfriendly,...

--I wonder why Mary is so unfriendly to us.--She is ______ than unfriendly,...

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______ to use crutches for six months severely limited Mr. Locke's ability t...

______ to use crutches for six months severely limited Mr. Locke's ability t...

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