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We learn English by _________ the radio

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/06 17:58:30
We learn English by _________ the radio
A.listen to B.hear C.listening to D.hearing
为什么是C不是A
The key is used for ________ the door
A.open B.opening C.to open D.opened
为什么是B不是A
We learn English by _________ the radio
A.listen to B.hear C.listening to D.hearing
为什么是C不是A
by doing sth
The key is used for ________ the door
A.open B.opening C.to open D.opened
为什么是B不是A
be used for doing sth
by和for是介词,后面要用动词的现在分词形式