30. Even if you are an experienced teacher, you sometimes ____ make some mistakes.

Occasions are quite rare ____I have the time to spend a day with my kids.

The twofootball players seem like enemies on the field but _______ they are good friends.

Tell me something about hismatch in Sydney—Well，he gotthe championship，we had expectedHe made it at last

_____clearly so that your teacher_____youcorrectly