用方框中所给词的适当形式填空。（5分）

get together, take turns, make sure, because of, be out of sight

小题1:Don’t let the kids ____ for a second.
小题2:Tom hopes to ____ with his old friends in America.
小题3:Mike was late for school ____ his illness yesterday.
小题4: You must ____ all the windows are closed before you leave the room.
小题5: We can ____ to help Mary with her lessons.