题目

(2019·浙江杭州一次质检)A child, if actively ________ (engage) in classroom activities, can be taught many things. 答案：engaged　句意：如果一个孩子能积极参加课堂活动，他能学会许多东西。本句为省略句。将本句补全后为：If a child is actively engaged in classroom activities, he can be taught many things.把相同的主语a child和be动词省去，故填engaged。

查看本题答案和解析