Our class teacher is still on ______ holiday, so our monitor will be in ______ charge of the meeting today.

Joy, what happened to the plane? It ___ at midnight, but it didn’t land on the airport on time.

Two hundred yuan for such a T-shirt! You ______ be joking!－I’m not joking . It’s made of silk.

Scott is good at painting.—Yes, his painting is very beautiful. And he can _________ dance very well.

I don’t think Lily can sing _______ Lucy.—I disagree. I think Lily can sing ______ Lucy.