What______useful dictionary for beginners of English! Where did you get it?— I bought it in the bookshop.

Every year, _____ people go to visit their factory

I don’t think that sweater is suitable _____ this hot weather.[ ]

__________knowledge comes from practice is known to all.

Must I stay here with you?— No, you . You may go home, but you go to the net bar (网吧).