Listen! The bird in the tree.
#40584
A
sing
B
singing
C
is singing
D
is sing.
推荐题目
When the teacher came into the classroom, the students ____ in groups.
#39479
A
work
B
have worked
C
were working
D
are working
Look! A dog ________ on the road. You should drive your car carefully.
#38073
A
lie
B
lies
C
lying
D
is lying
--- Do you know if Kitty ______ shopping this afternoon?--- I’m not sure. But if she , I will let you know.
#37591
A
goes, will go
B
goes, goes
C
will go, goes
D
will go, will go
---Great changes in our hometown since ten years ago.
#40580
A
have happen
B
have taken place
C
happened
D
have been taken place