Are you happy with your grades in the math exam—Not at all. I can’t have ________________.

How many students like this song in your class— _______ of us likes it. It sounds terrible.

He didn’t make ____ clear when and where the meeting would be held. [ ]

f us was good at swimming, so thecrossing of this dangerous river was really a_________

1He __________abasketball，buta baseball．