Are your friends listening to your teacher?

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We eat jiaozi on ________.

-- Is Lingling looking at the blackboard? 

-- No, she ________.

They ________ visiting any friends.

Do you like ________ a film this afternoon?

I have ________ things to do every day.

Lingling is sending an email ________ her friend.

Is Ann ________ her Visit?

Thank you ________ your letter.

--What are they ________? 

--They are ________ to the opera.