10. 音频 A: They are too short. B: They are tough. C: They are costly. D: They are helpful.

【单选题】Question 10: A: They are tough. B: They are costly. C: They are helpful. D: They are too short.

Costly、pricey、exclusive、 extravagant都可以表示贵。（ ）

Costly、pricey、exclusive、 extravagant都可以表示贵。（

5. In business, time is money and spending it in needless meetings that don’t achieve anything can be very costly.

Retaining a customer is far less costly than gaining a new customer.

Despite their good service, most inns are less costly than hotels of ______ standards.

Question 10 is based on the conversation you have just heard. A: They are tough. B: They are costly. C: They are helpful. D: They are too short.

I wonder whether it is __________ to make such a long and costly trip just to spend a day on the beach.

He likewise sailed in a costly ship; its anchor was __________ with pure gold, and every rope was of twisted silk.