We should protect the earth， we will have no water to drink．
The sign means（意思是） “ _____.” A.No parking B.No U-turn C.No right turn
.Look! The students _____ the classroom. A.clean B.are cleaning C.are clean
—What’s your favorite subject? — _____ Because it’s easy and interesting. A.Toys. B.Math. C.T-shirt.
—Hi, Lily. Happy New Year! — _____ A.Thank you. B.Yes. C.The same to you.
— _____ does your mother usually go to the office? —By bus. A.Where B.What C.How
means（意思是） “ _____.”
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