Oh, dear. I _______my English at home.—Oh,I’m sorry to hear that.

It is well known to us all ____ China sent up a manned spaceship to outer spaceSuccessfully last year.

Beijing is one of in China.

The family were enjoying their dinner, so I was wondering if I had arrived at a/an ________ time.[ ]

The function of an advertisement is that it can __________customers to buy the kinds of goods.