John was walking to school, he saw a cat in a tree.
#56784
A
Because
B
Since
C
While
D
If
推荐题目
It is _____ to cycle around Guilin. 
#58009
A
a great fun
B
a fun
C
great fun
D
a great funny
This training program can give you a lift at work, ____ increase your income by 40%.
#55437
A
as well as
B
so long as
C
so much as
D
as soon as