单项选择题
A.who B.which C.whom D.that
Our Accounts Receivable Department has written to you t...
单项选择题Our Accounts Receivable Department has written to you three times;（）,we have had no response to our letters.
A.consequently B.moreover C.thus D.however
（）in the labor market,he has enrolled in a computer cou...
单项选择题（）in the labor market,he has enrolled in a computer course.
A.Be competitive B.Being more competitive C.Being competitive D.To be more competitive
Information about the current foreign markets （） very i...
单项选择题Information about the current foreign markets （） very important to our company.
A.is B.was C.are D.were
