Mother’s Day is coming .It’s time to think of a proper gift for my mother won’t be expensi

问题补充：

Mother’s Day is coming .It’s time to think of a proper gift for my mother,won’t be expensive but will make her happy.

A. one

B. one that

C. those

D. the one that

答案：

A. one

(答案→)B. one that

C. those

D. the one that

解析：考查定语从句，题中用one 作a proper gift的同位语，同时它又是后面定语从句的先行词，从句中缺少主语所以用关系代词that，句意：母亲节快来了。是为母亲考虑一个适当礼物的时候了，是一份不太昂贵而使她高兴地礼物。所以选B。