—I wonder why he has been acting so strangely these days.—Recent pressure at work may his

问题补充：

—I wonder why he has been acting so strangely these days.

—Recent pressure at work may his behavior.

A. make for

B. stand for

C. change for

D. account for

答案：

A. make for

B. stand for

C. change for

(答案→)D. account for

解析：考查词组：A. make for有助于B. stand for代表C. change for交换…D. account for是…的原因，句意：--我想知道为什么最近他的行为奇怪。--最近工作的压力可能是他行为的原因。选D。