She helped us have more English pracitce___ asking us to play games in class.此处填by 还是for!

She helped us have more English pracitce___ asking us to play games in class.此处填by 还是for!
英语人气:337 ℃时间:2019-08-29 07:26:38
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by doing sth:表示方式,通过……方式/手段.完整形式是:by (means of) doing sth.
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