Anna is often heard ______songs in her room.                            
#97522
A
sung
B
singing
C
sing
D
to sing
推荐题目
________the new economical policy,he expanded his business and made more profits than before.
#89526
A
Benefiting from
B
Benefited from
C
Having benefiting
D
To benefit
---  Why do you want the book? ---- _________, sir.
#92396
A
Studying
B
Studies
C
To study
D
Studied
The play           next month aims mainly to reflect the local culture.
#88550
A
produced
B
being produced
C
to be produced
D
having been produced