.---How long did Mary work here?---For half a year but she didn’t leave us much . We hard

问题补充：

.

---How long did Mary work here?

---For half a year, but she didn’t leave us much . We hardly remember what she is like.

A. expression

B. explanation

C. impression

D. conclusion

答案：

A. expression

B. explanation

(答案→)C. impression

D. conclusion

解析：考查名词。A表达；B解释；C印象；D结论。句意：——玛丽在这里工作多长时间了？——半年了，但她每个月给我们留下太多的印象。我们几乎记不起她长什么样。