kind of glass dish that _____ heat is useful.

.—How _______the frog(雾) is!We can’t see clearly while riding.

It was at the school gate ______ I met an old friend of mine after class.

What do you think of those curtains? —Oh, they _____ very well with the wallpapers, I think.

John _____ knowledge of radio just bystaying around the radio station.