—will you come back home from vacation?—In two weeks.A. How oftenB. How soonC. How muchD.

问题补充：

—will you come back home from vacation?

—In two weeks.

A. How often

B. How soon

C. How much

D. How long

答案：

A. How often

(答案→)B. How soon

C. How much

D. How long

解析：特殊疑问词辨析。How often表示对频率的提问；how soon是对将来时的提问；how much是对数量的提问；how long是对一段时间的提问。根据回答in two weeks，说明是对将来时的提问，故B正确。