How can they expect to learn anything they never listen?A. whileB. unlessC. lestD. when

问题补充：

How can they expect to learn anything they never listen?

A. while

B. unless

C. lest

D. when

答案：

A. while

B. unless

C. lest

(答案→)D. when

解析：句意：当他们从来不听的时候，你怎么能期盼他们学会任何东西呢？while然而；unless除非；lest唯恐；when当……时候，选D。