从A,B,C,D四个选项中,选出可以填入空白处的最佳选项。
6. The story took place in Europe in the days before automobiles __ everyone used horses.
A.which B.where C.when D.as
7. —Hey! Here is a message on my cell phone, telling me to send money to…
—Delete it! It's a trick.Many a person __ _ by such tricks.
A.has been cheated B.have been cheated C.were cheated D.was cheated
8. —Have you heard about Apple iPhone 4?
—Sure.It is very hot these days.I'm thinking about getting ___ ___.
A.one B.them C.that D.it