Look! The Millers__________ house.
A. is moving
B. are moved
C. are moving
D. moving
查看答案
Is she ______in the classroom now? No, she isn't.
A. singing
B. sang
C. sings
D. sung
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