问题描述：
初中英语单项选择
1.Is this museum ( ) you visited the other day
A.that B.in which C.the one
2.- Where are children
- They were ( ) football on the playground just now.
A.play B.playing C.to play
3.-Where is Mark
- I think he is in the library because I often see him ( ) in the library at this time of day.
A.studying B.studies C.study
请说明选项以及原因,
抱歉，第二题 打错了。
2.- Where are children
- They were seen ( ) football on the playground just now.
A.play B.playing C.to play
各人有各人的选择，我不晓得谁是谁非了。do门or 和 jiajia的似乎有道理，可是也不一样。看得头疼~
1.Is this museum ( ) you visited the other day
A.that B.in which C.the one
2.- Where are children
- They were ( ) football on the playground just now.
A.play B.playing C.to play
3.-Where is Mark
- I think he is in the library because I often see him ( ) in the library at this time of day.
A.studying B.studies C.study
请说明选项以及原因,
抱歉，第二题 打错了。
2.- Where are children
- They were seen ( ) football on the playground just now.
A.play B.playing C.to play
各人有各人的选择，我不晓得谁是谁非了。do门or 和 jiajia的似乎有道理，可是也不一样。看得头疼~
问题解答：
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