【題目】Eighty percent of the students in this school ________ three to five times a week.

A. exercisesB. exerciseC. exercising

【答案】B

【解析】

句意“在我們學(xué)校80%的學(xué)生一周鍛煉三到五次”。根據(jù)three to five times a week“一周三到五次”可知,用一般現(xiàn)在時,排除C;“分數(shù)或者百分數(shù)+of+名詞”作主語,謂語與of后的名詞保持一致,即與students保持一致,students為復(fù)數(shù),故選B。

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