Youmustmakesureyourmask（口罩）isc

You must make sure your mask （口罩） is clean you put it on．（　　）

A．beforeB．afterC．sinceD．where

相关试题

Hello!Is that Mr Liu？

．（　　）

A．	Yes，I am	B．	No，I am not
C．	Sorry，he isn't in	D．	I'm Mr Liu

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I'm sorry I'm late．

（　　）

A．	That's right	B．	I don't know
C．	It doesn't matter	D．	You're welcome

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Nice to meet you!

（　　）

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﹣Could you please tell me _______？

﹣Sorry，I'm new here．（　　）

A．	why can I buy some juice
B．	when does the supermarket close
C．	how to get to the library
D．	what time does the movie begin

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﹣Congratulations!You got the first prize in the English speech contest．

﹣_______．（　　）

A．	Good idea	B．	Thank you
C．	Of course	D．	Enjoy yourself

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