Cars do cause people some health problems, in fact far more serious _____ than computers do. 
#15260
A
one
B
ones
C
it
D
those
推荐题目
Someone is ringing the doorbell. Go and see ______. 
#16917
A
who is he
B
who he is
C
who is it
D
who it is
________ matters much ________ our headmaster supports our plan.
#14862
A
As; that
B
It; whether
C
That; if
D
What; whether