The girl was often heard ______ happily in her room.
#44796
A
sing
B
to sing
C
singing
D
sings
推荐题目
The monkey was seen _________off the tall tree.
#44572
A
jump
B
jumps
C
jumped
D
to jump
--- Can you tell me whom the play ______ in the 1990s?--- Sorry, I don’t know.
#44626
A
was written by
B
was written
C
is written
D
1s written by
The old over 90    __  not only by their family but also by the government in many places.
#44473
A
is looked at
B
are taken good care of
C
are taken good care
D
is looking after
All the information _____ writing the report. 
#44725
A
is used for
B
is used to
C
is used as
D
is used by