单项选择题
A: Would you like a cup of coffee? B:（）
A. That’s Research and Development. B. No， thank you. C. Yes. D. Thank you.
单项选择题 The new executive has done well to make the wholesaler agree（）
单项选择题 A provisional agreement is one（）
单项选择题 The two parts reached no solution on the final item（）
单项选择题 The researcher has to start looking for a company（）
单项选择题 I just received a proposal（）
