问题

1–Haven’t you seen Mr.Wilson at the lecture?–Yes, but he had left _________ I could askhim any questions.

A: when
B:before
C:after
D: as

正确答案是：

同类题型

The company in our city ______ those big investors from the West

Bad luck! My watch is broken, ____ it doesn’t _____.

is works earned him quite a reputation in Liverpool, he has stayed there mostof his life, ___________ the occasional visit to his hometown.

It was the hard work and determination of the generation _____ had changed the opinion of people towards Chinese.

下列句子中,没有语病的一句是（）