---Have you heard of Kunming terrorist attack?---Yes, it happened ________ March 1st, 2014.
#37225
A
on
B
in
C
at
D
for
推荐题目
--________ does your father visit your grandparents a week? –Once.
#41453
A
How often
B
How many times
C
How long
D
How soon
–Look! A blind man is in the middle of the street. It’s too dangerous.–Let’s help him go the street
#35536
A
across
B
cross
C
through
D
along
It is said that the gravity on Mars is only about __________ of the gravity on earth．
#40531
A
three-eighths
B
third-eighth
C
three-eighth
D
third-eighths