Is your brother at home?—No. He ________ the library. He hasn’t come back yet.

Mr Green has_____ one-year-old son, doesn’t he?–Yes, and he also has ______eight-year-old daughter.

Where ______________? – An art exhibition. I think it’s really worth _______ and we can learn a lot from it.

_____in the office that anyone working on the computer should not tell other people the password of the Internet access.

Would you like _______ or shall we go by bus?— I prefer _______,but we have to take a taxi, for time is short.