Did you know that the earth is the home of animals?

Have you eaten your hamburger, Sue ? —Yes. But I’m still hungry. Could I have a ________ one please ?

Is this the first time you _____Chengdu ?—–No. But the first time I _____here, the city wasn’t so beautiful.

Do you know the answer __________ the question.[ ]

She is a mother ______ four children.[ ]