The number of the students _________with mobile phones nowadays.
A. are playing
B. is playing
C. play
D. playing
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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.
___________________?
A. Yes, they call me Mary.
B. Yes, several times.
C. Ok, I went to see you, but you were out.
D. Ok, I'll call you.