只能填入：
My brother and I often do our homework for 70 minutes.
=My brother and I often do our homework for (more than an/one hour).
注：/表示可以任意选用其一.
my brother and i often do our homeworkfor 70 minutes(同义句转换）
my brother and i often do our homeworkfor 70 minutes(同义句转换）
my brother and i often do our homeworkfor ____________
my brother and i often do our homeworkfor ____________
英语人气：831 ℃时间：2020-03-19 11:02:31
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