cheap
expensive
excellent
exam
选项A的意思为便宜的， B为昂贵的， C为极好的， D为考试。 故正确答案为B。
expensive [ɪkˈspensɪv] adj. 昂贵的；花钱的
例句：Broadband is still more expensive than dial-up services.
句意：宽带还是要比拨号服务费钱得多。
