Who looks ................your children when you are away from home

1.     Who looks ................your children when you are away from home?

A. for                           B. at                            C. after                       D. to

2.     He got wet ...............he forgot his umbrella.

A. because of              B. because                  C. but                           D. and

3.     He is going to the post office..............he wants to send a letter.

A. because                  B. but                          C. and                          D. moreover