商务英语写作试卷(课程代码:5440)I. Multiple-choice: For each sentence there are four choices marked A, B, C, and D. Choose the one that best completes the sentence. (1 point each)1. Please let us know which of our products _. A. you are interested B. are you interested C. they are interested D. you are interested in 2. We _ your name and address _ the Chinese Embassy in Bonn. A. are learning.from B. have learned .from C. hav