—I can’t find my e-dictionary. —I saw Mary going with . However I am not certain if it is

问题补充：

—I can’t find my e-dictionary.

—I saw Mary going with . However, I am not certain if it is yours.

A. one

B. it

C. that

D. another

答案：

(答案→)A. one

B. it

C. that

D. another

解析：考查代词：句意：--我找不到我的电子词典。--我看见玛丽带着一个走了，但我不确定是不是你的。这里所指的是an e-dictionary，用one泛指“可数名词单数”，it特指“同类同物”，that特指“不可数名词或可数名词单数”后面有后置定语，another另一个，选A。