—Must I park my car behind the building?—No, you _______. You _______ park it there.A. mustn’t; mayB. may not; mustC. don’t have to; may
-Must I send my uncle an e-mail now, Dad? -No, you ____.You____ do that after you finish your homework.
-_____important it is to study English well! Do you think so ? -Yes, I agree with you.
On holidays, they prefer to ______ at home rather than ______.
—Could you help me carry this box? It’s too heavy. —__________.
People should __________ from __________ down the trees to protect the earth.