Did you have fun ________ with your friends—Yes. We don’t have much time ________ together now.

I lost a book, ______I can’t remember now.

Yao Ming is ____ excellent player. I’m ____ big fan(粉丝)of him.

Mr. Lin gave us some _____ how to learn English well last week.

Though _____ of the danger, he still went skating on the thin ice.