问题描述:
there were so many people talking in the concert hall that i could not the music.
a,concentrate on b,fix on c,centre on d,devote to为啥选a别选项的哪错了,帮我改正过来!
a,concentrate on b,fix on c,centre on d,devote to为啥选a别选项的哪错了,帮我改正过来!
问题解答:
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