How are you feeling here? — It’s quite hot. I don’t know _____ to go or stay.

About _________ people are in the People’s Park at the weekends.

The presidents of China and Russia had ____ interview a short time ago.—And it was ____ great success.

Is this red bag yours?—No, it isn’t. is that black one.

Recycling is good, so don’t ______ bottles or newspapers.