the books on the desk, ________ is of any use forour safety.

_ at the cafeteria before, Tina didn’t want toeat there again.

Could I clean the bedroom for you—No, thanks. I _______ it myself.

I don’t feel like going to the sportsmeet next week. There are too many excellent athletes. — It is foolish of you to _______ trying.

With so many people ____ the Internet, it is difficult to see online movies at the same time. [ ]