30．He worked hard and achieved what he set out to do, but ________ what he had owned, including his health and his marriage.

　　　 A. at the mercy of　　　　　　　　　　　　　　　　　　　　　　 B. at the service of

C. at the cost of　　　　　　　　　　　　　　　　　　　　　　　　 D. at the risk of

29．The hotel was nice; the weather was hot; the beaches were beautiful. _______ I’d say it was a great vacation.

　　　 A. Anyhow　　　　　　　　　　 B. Nevertheless 　　　　　 C. Somehow　　　　　　　　 D. Altogether

28．We were just talking about her when, at that ________ moment, she walked in.

　　　 A. accurate　　　　　　　　　　 B. dynamic 　　　　　　　　 C. precise　　　　　　　　　　　　　　 D. definite

27．It was a ________ match, with the winning goal scored in the final minute.

　　　 　A. tight　　　　　　　　　　　　 B. tense 　　　　　　　　　　　 C. rough　　　　　　　　　　　 D. tough