—I am thinking of the test tomorrow. I am afraid I cannot pass this time.
— ! I am sure you will make it.
A. Go ahead
B. Good luck
C. No problem
D. Cheer up
网友回答
A. Go ahead
B. Good luck
C. No problem
(答案→)D. Cheer up
解析：考查交际用语。A 在口语中表示：做吧！请便！B祝你好运！C没问题。D振作起来。
这里时劝别人要有自信，故答案为D。