25. The light bulb has _____. Please replace it.
(A) broken up
(B) burned out
(C) bailed out
(D) buttered up

(C)bail out 放棄，退出；bail：錢, 保釋金

The actor has bailed out of the film after only three weeks' shooting.

(D)在 to butter up someone這個習慣用語裡，butter這個字是用做動詞。

To butter up someone並不是真的在某人身上塗黃油。作為俗語，是指對人不尋常地客氣，過份地奉承，目的是在於贏得此人的好感，或者是要他給你一種特別的好處。

break up

1. 分手

She's just broke up with her boyfriend. (她剛和男朋友分手。)

2. (學校)放假

We broke up for the holidays in June.(我們六月份放假。)

3. 分解；解體

It was feared that the break-up of the oil tanker would result in further pollution.(有人擔心油輪解體會導致更嚴重的污染。)

burn out

1. (火)燒盡

The fire has burned out.

2. (引擎等過熱)燒壞；故障

It looks like the starter motor on the car has burned out.(看起來像是汽車引擎的啓動裝置被燒壞了。)

bail out

1. (因失事)跳傘

The plane's engine failed and the pilot was forced to bail out.(飛機引擎發生故障，機師被迫跳傘。)

2. 放棄；退出

The actor has bailed out of the film after only three weeks' shooting.(該演員只拍攝了三個星期就退演了。)

butter up

拍馬屁

You will have to butter them up a bit before they'll agree. (你得奉承他們一下，他們才會同意。)