单项选择题

Li Lei didn't meet the famous American professor（）he was on holiday last year.

A．unless
B．until
C．if
D．whether

<上一题目录下一题>

热门试题

单项选择题

Sam: Was the driving pleasant when you went to Mexico last summerLili: No, it（）for four days when we arrived, so the roads were very muddy.

A．was raining
B．had been raining
C．would be raining
D．rained

单项选择题

By the time you get to Shanghai tomorrow, I（）for Kun ming.

A．am leaving
B．will leave
C．shall have left
D．had left

相关试题