1 .Tom is not at school. Do you know what happen  __?

A. with him     B .to him    C. to he     D. for he

2 .My mother is _. I have to look after her.

A .in the hospital   B.in a hospital    C .in hospital      D.  hospital

3 . Did you hear someone ___at the door?

A. knocks    B. to knock    C. knocked    D. knocking