The students are busy making __for it 用prepartion 不用preparin

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The students are busy making __for it 用prepartion 不用preparing

preparing是动词的-ing形式,一般表示正在进行的动作,动作正在发生.可以是动名词,常用搭配：be busy doing sth.(正在忙于做...)
make preparation for ...是固定搭配,意思是正在为...准备.
而此句中已经有be busy doing(making)了,就不能用preparing了.这里的making就是句式中的doing.然后,只要考虑make的搭配就行了.你看,显然应该用 make preparation for ,因此填preparation.
主要还是词汇量和短语量的问题,熟能生巧,建议你平时多读课文,多背一些好的段落,培养语感.

The students are busy making __for it 用prepartion 不用preparin 用attend,join,take part in填空 1. The students are busy making the students are busy （）their homework The students are making an experiment in the science l_____. The students are busy making____ fou the lecture because the The students are busy doing some_____for the final exam.(rev The students are busy preparing for the national entrance ex All the students are busy _____ English in the morning. The students in Grade 3 are busy the exam now. The students are busy ___(listen) to the teacher. The students are busy ______ for the exam. （）The students are busy __ for the exam.