蓝冰羽
幼苗
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少打了个to?
used to do 表示过去常常做某事,而现在往往不做了
i used to get up early in the morning when i was still a hight school student.
be used to doing 表示习惯于做某事
i am used to eating rice now.
be used to do表示...被用来做某事
Pig Stem Cells to Be Used to Grow Human Organs?
1年前
8