--Is this your classroom, Jack?

--Yes, it's ________. Thank you for helping me find it.

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If you want to find something about the movie stars, you can __________ on the website.

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We are going to plant trees. Would you like _________ us?

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You'd better take your own __________ bag when shopping.

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Please _________ the lights when you leave the room, or it will waste much electricity.

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Give me ________ bread, please. I'm hungry.

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--I want to go to different places, but I don't know the ___________.

--A map is useful, I think.

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China _________ 5500 kilometres from north to south, and 5200 kilometres from east to west.

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There are _________ people visiting the Forbidden City every year.

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