(2009.12)John had never been abroad before, ________ he found the business trip very exciting.
A. because
B. though
C. so
D. while
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(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.
(2009.12)The purpose of new technology is to make life (easy) ________, not to make it more difficult.