问题
选择题
We’d better _________ when he is thinking, as he prefers to solve problems on his own.
A．wake him up
B．set him aside
C．leave him alone
D．ring him up
答案
C
题目分析：句意：当他思考的时候我们最好别打扰他，因为他喜欢独自处理问题。A. wake him up把他叫醒；B. set him aside 把他放在一边； C. leave him alone别打扰他； D. ring him up给他打电话。根据句意故选C。