_____ this way, you can work out the math problem. 
#48412
A
Of
B
By
C
On
D
In
推荐题目
What’s this ________ ? It’s a hat. 
#47313
A
in the English
B
in English
C
for English
D
at English
They are very grateful _______ us _______ them so much help.
#47865
A
to, to give
B
of, to give
C
for, give
D
to, for giving