单项选择题
A.for B.to C.on D.at
Send your questions to Mary Adams,（） is the director of...
单项选择题Send your questions to Mary Adams,（） is the director of Public Relations,for a quick reply.
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
