— When does your mother go shopping? —Usually         Sunday mornings. 
#50934
A
in 
B
on 
C
with
D
at
推荐题目
Wei Fang is young,but she plays ping-pong ____ her mother. 
#50705
A
as good as
B
as well as
C
as better as
D
as best as
.You look tired .______ working indoors you should be out for a walk.
#46577
A
Because of
B
Instead of
C
Thanks to
D
As for
On their way_______home, they saw Andy.
#47958
A
to
B
from
C
/
D
at