（2009.12）________ the weather improves, we will suffer a huge loss in the tourist industry.

As
B. Since
C. While
D. Unless

（2009.12）We are happy at the good news ________ Mr. Black has been awarded the Best Manager.

A. that
B. which
C. what
D. whether

（2009.12）It is important that we ________ the task ahead of time.

A. will fish
B. finished
C. finish
D. shall finish

（2009.12）Would you please pass me the book ________ cover is black?

A. which
B. whose
C. that
D. its

（2009.12） ________ in the company for three years, Mark has become experienced in business negotiations.

A. Having worked
B. Have been working
C. Have worked
D. Worked

（2009.12）Not until she arrived at the meeting room ________ she had forgotten to bring the document.

A. she realized
B. did she realize
C. she did realize
D. does she realize

（2009.12）John had never been abroad before, ________ he found the business trip very exciting.

A. because
B. though
C. so
D. while

（2009.12）________ some students are able to find employment after graduation, others will have to return to school and earn an advanced degree.

A. Since
B. While
C. Because
D. If

（2009.12）Employees are not allowed (make) ________ personal phone calls in the office.

（2009.12）The shop assistant priced the goods before (put) ________ them on the shelf.