I am sorry to ______ (give) you so much trouble.

admin2013-12-03  21

问题 I am sorry to ______ (give) you so much trouble.

选项

答案have given

解析 动词不定式的完成式。动词不定式的完成式表示的动作发生在谓语动词表示的动作之前。结构为to have done或to have been done(被动式)。[例句] He seems to have caught a cold.他看上去感冒了。
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