—When did the Shanghai Expo open? —_______May 1st, 2010.
#51247
A
In
B
On
C
At
D
By
推荐题目
We can see some apples _______ that tree and a nice bird ______ that tree.
#48868
A
on; in
B
in; on
C
in; in
D
on; on;
Lucy met her mother in the park by chance.
#48201
A
with accident
B
by accident
C
by mistake
D
by opportunity
Don’t be late again. Please try your best to be here __________.
#51082
A
in time
B
on time
C
at times
D
at all times