问题补充：
--- Mum, have you seen my mobile phone?
--- you bought last week? I’m afraid I haven’t seen ．
A. The one; it
B. The one; one
C. One; it
D. One; one
答案：
(答案→)A. The one; it
B. The one; one
C. One; it
D. One; one
解析：考查代词。第一空表你上周买的那个，是特指，用The one；第二空我没看到它，和上文指的是同一个，用it。所以选A。
