问题补充:
—How long do you think it will beman can finally solve the problem of cancer?
—Well,it depends
A. when
B. until
C. after
D. before
答案:
A. when
B. until
C. after
(答案→)D. before
解析:考查连词:句意:你认为还要多久人才能最终解决癌症的问题。--那要看情况而定了。这句话用了It will be+一段时间+before从句,意思是“还要多久…才/就….”,选D。