At least 300 million people are using QQ _________ by Ma Huateng to chat on line.
#45059
A
create
B
creates
C
creating
D
created
推荐题目
Many accidents_____ by careless drivers last year. 
#44673
A
are caused
B
were caused
C
have caused
D
will cause
The young trees should______ as often as possible.
#44714
A
take care of
B
be take care of
C
be taken care of
D
be taken care
These young trees must        .
#44857
A
look after well
B
be well looked after
C
take good care of
D
be taken good care
The new supermarket ______________ two years ago.
#45011
A
built
B
builds
C
is built
D
was built