问题
选择题
---How long have you ________ your penfriend?
---For five days. I received it last Sunday.
A．heard from
B．received the letter from
C．heard of
D．had the letter from
答案
答案：D
题目分析：句意：你收到你笔友的信多久啦？五天了。我是在上个星期天收到的。How long是对一段时间的提问，句中谓语动词必须是延续性动词，但heard、received都是结束性动词，所以选D。