Hearing that he would have to be given another injection, the boy _ a smile to cover up his fear.
A. wore
B. managed
C. strengthened
D. controlled
网友回答
A. wore
(答案→)B. managed
C. strengthened
D. controlled
解析：动词辨析。A佩戴，穿着；B设法；C加强；D控制；句意：听说他不得不再注射一针，那个男孩挤出了一个微笑来掩盖他的担心。