49. Questons and exercises are given by the computer. Which
decides_ ____to move the student ahead, review an easier level, ___give more
work on the same level.
A. either\or
B. both\and C.
whether\or D. not only\but
50---why did she spend so much time searching shop
after shop only for a blouse? ---Oh,
she was very ___about her clothes.
A. special B. particular C. especial D. unusual