She’s afraid of ______ in front of other people.
— Where’s Tom? He is wanted on the phone.— Sorry, he ______ to the library.
I can’t believe these photos ______ by such a little girl.
— Listen! What’s the noise?— My brother ______ the program of the World Cup in the sitting room.
The air in Beijing is getting much ______ now than a few years ago.
The students asked Mr. Wang ______ them some advice on reading.