问题补充:
— will you stay in Shenzhen for your summer vacation?
—For about two weeks.
A. How far
B. How often
C. How soon
D. How long
答案:
A. How far
B. How often
C. How soon
(答案→)D. How long
解析:考察特殊疑问词。A对距离提问;B对频率提问;C对将来时提问;D对一段时间提问;根据回答for about two weeks可知是对一段时间的提问,故D正确。