I have heard both teachers and students ______ well of him.

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问题 I have heard both teachers and students ______ well of him.

选项 A、to speak
B、spoken
C、to have spoken
D、speak

答案D

解析 请参见上题详解。另外,需要注意的是,在不定式作feel,listen,hear,have,make,let,watch, see,notice,observe,look等感官动词的宾语的补足语时,不定式符号协必须省略。例如:They felt the atmosphere become increasingly tense.他们感到气氛变得越来越紧张。We can make the liquid nitrogen turn back into a gas.我们能使液体氮重新变成气体。The childre
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