I'm________totheclasscarefully,but

发布时间:2020-07-14 12:49:42

I'm ________ to the class carefully, but I can't ________.A.listen; understandB.listening; understandC.hear; listen toD.hearing; understand

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B解析listen to指听的动作、过程,而hear指听的结果,故选B.
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