—How long do you think it will be the Stock Market returns to normal?—At least one year I

问题补充：

—How long do you think it will be the Stock Market returns to normal?

—At least one year, I guess.

A. before

B. when

C. until

D. that

答案：

(答案→)A. before

B. when

C. until

D. that

解析：考查before句型。It be 一段时间before从句 意为：一段时间以后某事才发生。句意：你认为多久以后股市才回归正常？我猜至少一年。