It was a great for him to be pleasant to people he didn’t like.A. attemptB. troubleC. pow

问题补充：

It was a great for him to be pleasant to people he didn’t like.

A. attempt

B. trouble

C. power

D. effort

答案：

A. attempt

B. trouble

C. power

(答案→)D. effort

解析：考查名词。A尝试；B麻烦；C力量；D努力。effort (作可数名词用) (=vigorous attempt) 努力的尝试，根据题意选D。