If you want to get good grades,________ in as much effort as possible.( )
A. |
putting |
B. |
put |
C. |
to put |
D. |
puts |
_______ at people when you talk.This is a polite way of communication in China.( )
A. |
Look |
B. |
Looking |
C. |
To look |
D. |
Looked |
_____it over,and you will be able to work out the problem.( )
A. |
Thinking |
B. |
To think |
C. |
Think |