[C] hostile [D] opposing
9. I ____ with thanks the help of my colleagues in the preparation of this new column.
[A] express [B] confess
[C] verify [D] acknowledge
10. It is strictly ____ that access to confidential documents is denied to all but a few.
[A] secured [B] forbidden
[C] regulated [D] determined
11. The pollution question as well as several other issues is going to be discussed when the Congress is in ____ again next spring.
[A] assembly [B] session
[C] conference [D] convention
12. Christmas is a Christian holy day usually celebrated on December 25th ____ the birth of Jesus Christ.
[A] in accordance with [B] in terms of
[C] in favor of [D] in honor of
13. Since it is too late to change my mind now, I am ____ to carrying out the plan.
[A] obliged [B] committed
[C] engaged [D] resolved
14. It was a bold idea to build a power station in the deep valley, but it ____ as well as we had hoped.
[A] came off [B] went off
[C] brought out [D] make out
15. To survive in the intense trade competition between countries, we must ____ the qualities and varieties of products we make to the world-market demand.
[A] improve [B] enhance
[C] guarantee [D] gear
16. He left early on the ____ that he had a bad toothache and had to see the dentist.