Employees who are planning to extend holiday vacations with unused leave days must inform their supervisors ____ October 31.
A.at
B.for
C.by
D.until

Human resources personnel are trained to tell the differences ____ a resolvable conflict and an irresolvable confrontation.
A.upon
B.about
C.during
D.between

We are holding a dinner this evening to congratulate Mr. Brian Banks ____ his thirty years with the Meyers Cold Cuts Company.
A.to
B.of
C.on
D.from

____the last ten years, professional and business services comprised 38 percent of the total job growth in the Washington region.
A.In
B.On
C.Since
D.While

____determined to earn their holiday bonus must not miss any days between now and the Christmas break.
A.They
B.That
C.Those
D.Someone

The finance expert received the proposals and will now sift through ____ before determining which one will best suit the company’s interests.
A.it
B.them
C.theirs
D.ours

The company anniversary party will take place ____ August 26, so please mark the date on your calendars.
A.in
B.at
C.on
D.for

The innovative website allows a traveler to search and find locations of interest that lie ____a fifty-mile radius of the city.
A.among
B.within
C.into
D.through

We need not remind everyone here today that mobile phones and pagers should be turned off while the symposium is ____ progress.
A.at
B.on
C.over
D.in

Larger businesses are expected by the government to donate a certain percentage of ____earnings to charities each year.
A.its
B.their
C.it
D.them