Listen, a small number of students ______ in the classroom. 
#40135
A
talk
B
talks
C
is talking
D
are talking
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My grandpa ­_________   lanterns for Lantern Festival now.
#37561
A
is making
B
made
C
was making
D
make
Listen, who______ in the classroom?
#40694
A
sings
B
sing
C
is singing
D
singing