Do you play football after work?　　　　— Yes, ________ Playing football is not my favorite sport

He ________ late for school.

This kind of bird is _____, and we should do what we can to _____it[ ]

What has made him upset recently–________alone to face a troublesome milk case.

I have a tight budget for the trip，so I’m not going to fly ________ the airlines lower ticket prices.(2012·上海，32)