Dr. Fields received (so large bill) when he (checked out of) the hotel (that) he did not have enough money to (pay for) a taxi to the airport.

单项选择题Rock music was (original) (a mixture) of country music and (rhythm) (and) blues.

单项选择题The conversation had been (carried) on chiefly (in French), a language (which) Mr. Steward was (perfectly) acquainted.