Three years has passed _________ they came to this school.
#55246
A
since
B
for
C
when
D
before
推荐题目
My father feels ________ because he heard from ________ today. 
#58571
A
happy;an old friend of he
B
happy;an old friend of his
C
happily;one of his old friends
D
happily;an old friend of him
Why don’t you________ Beijing duck? 
#55668
A
try
B
to try
C
trying
D
tries