一、选择题

1.____D___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

2.Our Accounts Receivable Department has written to you three times;___D____,we have had no response to our letters.

A.consequently 

B.moreover 

C.thus 

D.however

3.Send your questions to Mary Adams,____A___ is the director of Public Relations,for a quick reply.

A.who 

B.which 

C.whom 

D.that

4.The numbers in the key do not correspond ___B____ those in the lessons.

A.for 

B.to 

C.on 

D.at

5.The trading company ____D___ a big loss raised a claim against the exporter.

A.be suffered 

B.suffered 

C.to suffer 

D.suffering