-What do you think of the music teacher?- she is an elegant lady she can be extremely dif

问题补充：

-What do you think of the music teacher?

- she is an elegant lady, she can be extremely difficult to work with.

A. While

B. When

C. Even if

D. As

答案：

(答案→)A. While

B. When

C. Even if

D. As

解析：考查连词：A、While当…时候，虽然，然而，B、When当…时候，C、Even if既然，D、As正如，随着，因为，句意：--你认为音乐老师怎样？--虽然她是个优雅的女士，但是她是很难共事的。选A。