几道英语小题,1.He surf the Internet _______once a week.A.for B.to

几道英语小题,
1.He surf the Internet _______once a week.
A.for B.to C.in D.about
2.This is a great way to help children get out in the open and enjoy some exercise.翻译
3.Doing sports every day________ healthy.
A.will stay B.is staying C.to stay D.staying
4.I want to know_______.
A where does our teacher live
B.where our teacher lives in
C.where our teacher lives
D.where does our teacher live in