6. I‘m not sure whether I can gain any profit from the investment， so I can’t make a(n) ________ promise to help you.
A) exact B) defined C) definite D) sure
7. The sports meet， originally due to be held last Friday， was finally ________ because of the bad weather.
A) set off B) broken off C) worn off D) called off
8. After the robbery， the shop installed a sophisticate alarm system as an insurance ________ further losses.
A) for B) from C) against D) towards
9. A healthy life is frequently thought to be ________ with the open countryside and homegrown food.
A) tied B) bound C) involved D) associated
10. In Britain today women ________ 44% of the workforce， and nearly half the mothers with children are in paid work.
A) build up B) stand for C) make up D) conform to
6-10 CDCDC