The problem is difficult ________.3QA.to be done B.to be worked out C.to work out D.to doing

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The problem is difficult ________.3QA.to be done B.to be worked out C.to work out D.to doing

The problem is difficult ________.3QA.to be done B.to be worked out C.to work out D.to doing
The problem is difficult ________.3Q
A.to be done B.to be worked out C.to work out D.to doing

The problem is difficult ________.3QA.to be done B.to be worked out C.to work out D.to doing
答案C 不定式短语在句中作状语,修饰表语形容词,不定式与主语构成逻辑上的动宾关系,动词不定式不用被动式. 查看原帖>>