—What do you think about the new teacher?— the new teacher is an elegant lady she can be

问题补充：

—What do you think about the new teacher?

— the new teacher is an elegant lady, she can be extremely difficult to work with.

A. As if

B. As long as

C. Because

D. While

答案：

A. As if

B. As long as

C. Because

(答案→)D. While

解析：考查引导词，As if意思“好像”，后跟虚拟；As long as意思“只要”，引导条件状语从句Because意思“因为”，引导原因状语从句； While意思“虽然”，句子意思“虽然新老师是个漂亮的女士，但是她很难从事工作”，固定词组work with意思“从事工作”