一Excuse me, but where’s Mrs. Liu? I want to ask her for some advice.一She       the library. You can find her there.

--Susan's parents have bought -a large house with a swimming pool in Paris.--It        be very expensive.

We are _________ by doctors to eat more natural food and take plenty of physical exercise.

---What a nice model car!---Thanks a lot. It         me the whole day to make it.

—Which hobby do you think        the least space?  —Collecting stamps.