Your letter will get attention; they know you're expecting the answer.A. carefulB. common

问题补充：

Your letter will get attention; they know you e expecting the answer.

A. careful

B. common

C. instant

D. general

答案：

A. careful

B. common

(答案→)C. instant

D. general

解析：考查形容词：A. careful仔细的，B. common普通的，C. instant立刻的，D. general一般的，句意：我敢肯定，你的信会立即得到重视。他们知道你正在等待答复。选C。