英语选择题（3道,要原因）
1.Mr .Bill works________the computer for more than 4 hours every day.
A.at B.for C.in D.on
2.A new idea_____at the meeting.
A.rises B.raises C.is risen D,is raised
3.The students are busy______over there lessons.
A.going B.with C.to go D.with going