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13.
The window was broken. Try to _____who has broken it.
(A) ：find out
(B) ：find
(C) ：look for
(D) ：look
The window was broken. Try to _____who has broken it.
(A) ：find out
(B) ：find
(C) ：look for
(D) ：look
参考答案
