The girl was often heard ______ happily in her room.
#44796
A
sing
B
to sing
C
singing
D
sings
推荐题目
This kind of books _____ well and they _____ out last week.
#44810
A
sells; were sold
B
is sold; sold
C
sells; sold
D
is sold; were sold
A new bridge from Zhongshan to Macao           in five years.
#44382
A
are built
B
were built
C
have built
D
will be built
Driving after drinking wine         in China.  
#44968
A
allows
B
doesn't allow
C
is allowed
D
isn't allowed