— Did a letter come for me this morning? — Yescame for you. A. ThatB. It C. OneD. The l

问题补充：

— Did a letter come for me this morning?

— Yes. came for you.

A. That

B. It

C. One

D. The letter

答案：

A. That

B. It

(答案→)C. One

D. The letter

解析：句意为：---今天早晨有我的信件吗？ ----是的，有一个你的信件。That对上文的总结或特指某物；it特指的某事物；题意问的是有没有我的信件，所以不应是特指，只是说有一封信，故D也是不正解的，答案应为C，泛指一封信。