【正确答案】 C

【答案解析】[解析] 47-49
M: Would you like a full tune-up with the oil and filter change today, Mrs. Webster?
W: Yes. It's been about 10,000 miles since the last one.
M: OK. Just sign here and we'll have your vehicle ready by four this afternoon.
W: In fact I won't be able to pick up the car myself. But my husband will drop by before you close.

词语tune-up(调试)、oil and filter change(机油和过滤器的更换)、vehicle(车辆)和10,000 miles(10,000英里)表示他们在谈论车的保养，这由mechanic(机械工)(C)来完成，而选项(A)dentist(牙医)、选项(B)guide(导游)和选项(D)musician(音乐家)均不正确。

【正确答案】 D

【答案解析】Webster夫人把她的车开来进行保养(be serviced)，而不是修理引擎(A)或更换挡风玻璃(B)。虽然可能会检修车灯(C)，但这并不是把车开到这里来的原因。

【正确答案】 B

【答案解析】Webster夫人说她自己不能来取车，但她丈夫会来，所以选项(B)Mr. Webster (Webster先生)是正确答案。选项(A)、选项(C)、选项(D)均不正确。