_______ his return from America, he got down to his research.
#92169
A
While
B
In
C
As
D
On
推荐题目
Good news! The price of all those second-hand goods is ________ before.
#92608
A
30% as lower as
B
30% lower than
C
lower 30% than
D
as 30% low as
  My brother ______singing ______ dancing while I _____ dance _____sing. 
#94720
A
prefers , to , would rather , than
B
would rather , than , prefer , to
C
prefers , than , would rather ,to
D
would rather , to ,prefer , to
____ is no good ____ without doing anything.
#92333
A
This; talking
B
It; to talk
C
It; talking
D
That; to talk