问题

“Was his father very strict with him when he was at school?” “Yes. He had never praised him _______ he became one of the top students in his grade.”

A:after
B:unless
C:until
D:when

正确答案是：

同类题型

136. —I’ll thank you ______ my affairs_______.— I will. It’s none of my business.

As nobody here knows what’s wrong with the machine, wemust send for an engineer to _______ the problem.A．raise B．face C．present D．handle D【解析】试题分析：考查动词：

The WTO cannot live up to its name _______ it does not include a country that is home to one fifth of mankind.

The factory ______we’ll visit next week is not far from here.

Would you like to go shopping with me— , but I’m too busy now.