Choose A, B, C or D to indicate the sentence that is similar in meaning to the one given.
The best way to make them work hard is to promise them reward.
A. Promise them a reward and they will work hard.
B. If you promise to reward, they will word hard.
C. Reward them and make them work hard.
D. If they work hard, you should promise to reward them.
Đáp án B.