．Canada, ________ second to Russia in size, is ________ home to all kinds of animals and plants, making it famous for its natural scenery.

What a pity! I _____ in London for three more days, but something urgent needed to be dealt with back in Beijing.

—Some English idioms are difficult to understand.

—Exactly, ________ you know the meaning of each word.

The White Horse Temple in Luoyang is one of the first historic buildings________ to receive special state protection.

Don’t quarrel with your friend, ________will damage your friendship．

---Will you be _________ this evening, Mary?

---That depends. I am afraid I will be with my manager together discussing a plan.

How long do you think it will be ______ the Chinese people land on the moon?

. ______ are allowed to take part in the outdoor activities.

—Now that you like computers very much, isn’t it a good idea to get ______?

—Well, I’d like to but I can’t afford that expensive a computer at present.

----- I have booked a room for today and tomorrow. 　　　

----- _______, sir.