-What are they doing? -They are talking      the phone       their life.
#50093
A
on; about
B
in; about
C
to; about
D
on; on
推荐题目
What about _____ to the cinema with me? 
#49789
A
to go
B
go
C
went
D
going
They give us some candy ______a treat.
#46609
A
like
B
for
C
in
D
as
We all know that doing morning exercises ______. 
#50401
A
is good for our healthy
B
are good for our healthy
C
are good for our health
D
is good for our health