I’m so glad to see you back, Lucy. How long _______at your grandma’s?

The Kings have been to Tibet. They have decided to go there next year.

________areBob’sgrandparentsandtheyareverynice.

The newly built school canteen(餐厅) is big enough to hold two ________ students at lunch time.

Is Mary in the library, Tom?－No. She ______ with her friends.