Is she ______in the classroom now? No, she isn't.
A. singing
B. sang
C. sings
D. sung
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The number of the students _________with mobile phones nowadays.
A. are playing
B. is playing
C. play
D. playing
The students ________an English class at the moment.
A. has
B. are having
C. have
D. had
Listen! The birds _________ in the tree.
A. are singing
B. sing
C. to sing
D. sang
_________________?
A. Oh, he's very well.
B. Certainly.
C. Oh, that's nice of him.
D. You're welcome.
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