Americans eat vegetables per person today ______as they did in 1910.
— Amanda, what’s your favourite subject?— ______, though it’s not easy for me.
Mrs Brown, don’t worry about Daming. He is old enough to take care of ______.
In my opinion, parents should get their kids to face difficulties ____ their own.
— This is ______ useful guidebook.— I agree with you. We may get lost without it.
-What are you interested in? -__________.