Daniel is very modest. He never before his friends.A. shows offB. shows upC. turns offD.

问题补充：

Daniel is very modest. He never before his friends.

A. shows off

B. shows up

C. turns off

D. turns on

答案：

(答案→)A. shows off

B. shows up

C. turns off

D. turns on

解析：从前文Daniel很谦虚来看，选项A炫耀符合题意。他从来不在朋友面前炫耀自己。