解析：参考解析: carry on意为"继续"carry off意为"成功应付(困难.局面";carry out意为"执行、完成";carry forward意为"推进，使前进”。其中，off，out,forward在这里为副词，名词要放在动词和副词之间，只有carry on既可说carry sth. on，也可说carry on sth.，故选A。

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Breakfast is the first _______ of the day.

A. food

B. dinner

C. lunch

D. meal

解析：参考解析: food意为"食品"; dinner意为"正餐，晚餐"; lunch意为"午餐”，这三个词都不可以泛指"一顿饭", 而a meal可以泛指任何—顿饭，故选D。

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______ difficulties we may come across, we＇ll help one another to overcome them.

A. Whatever

B. However

C. Whenever

D. Wherever

解析：Whatever + n. difficulty (-y名词后缀n.困难→difficulties ns.复数形式)

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________that Bob had got promoted, his friends came to congratulate him.

A. Heard

B. Having heard

C. Hear

D. To hear

解析：参考解析:现在分词短语作状语。现在分词作时间状语一般位于句首，表示的动作和谓语动词的动作同时发生，如果分词动作发生在谓语动词之前，用现在分词的完成形式。"听说"发生在"去祝贺"前,是由同一个主语his friends发出，表示主动，所以用现在分词的完成形式having heard,相当于when his friends have heard that.句意:得知鲍勃被提升以后，他的朋友们来庆祝他。

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Tom _____ the party as no one saw him there yesterday evening.

A. can＇t attend

B. mustn＇t attend

C. won＇t have attended

D. couldn＇t have attended

解析：参考解析:情态动词及现在完成时的用法。"情态动词加现在完成时态"表示的是对过去事情的推测。肯定形式用must have done;否定形式用can＇t/couldn＇t have done,本题是对昨晚发生事情的推测，又说否定形式，故答案选D。A项是对于现在时must的推测形式，但是由于题目中的时间是昨天晚上，以后是对于过去的猜测，所以排除。B项、C项语气和时态都不正确。句意:汤姆一定没有参加昨天晚上的聚会，因为没有人看到他。

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In Britain, the best season of the year is probably ____spring.

A. last

B. latter

C. late

D. later

解析：考点：近义词辨析题意：英国最好的季节很可能是暮春。
答案：late spring（暮春）
解释：later（后来，例：he made a mistake in the experiment, for which he apologized later.），last（最后），latter（后一个，与former相对，用法：the former…the latter: 前者…后者…）

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It was not until the accident happened __________ .

A. when I became aware of my foolishness

B. when my foolishness became obvious

C. that did I realize my own folly

D. that I became aware of my own foolishness

解析：参考解析:强调句型。"It is/was+被强调部分+that/who(被强调部分是人)"构成强调句型。本题是对句中状语部分not until the accident happened的强调，只能用that来引导，且一定要用陈述语序。事实上，强调句型去掉It was和that后句子依然能成立，本题可转变成: I didn＇t become aware of my own foolishness until the accident happened.句意:直到事故发生我才意识到自己的愚蠢。

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_________ he was an old customer, the boss allowed 5% discount off the prices of the goods.

A. Gave

B. To give that

C. Given that

D. Giving that

解析：参考解析:given that可以理解为considering，意为"考虑到"。根据题意，故选C。

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By the end of this year Mr. Smith ______ in our company for exactly three years.

A. is working

B. has worked

C. will work

D. will have worked

解析：参考解析:动词时态。根据时间状语By the end of this year可以判断时间是将来，应该从C项和D项做出选择。同时，by引导时间状语时，句子时态一般是完成时态，所以选D。其他选项的时态都不可以与时间状语by the end of this year连用。句意:到今年年底，斯密斯先生在我们公司工作正好3年。本解析在2008年12月的试题中(Structure: Section 20)已经出现过，望考生加以注意。

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