8. “Was it under the tree _____ you were away talking to a friend?” “Sure. But when I got back there, the bike was gone.
A. that B. where
C. which D. while
【陷阱】此题很容易误选A，认为这是强调句型。
【分析】其实此题应选D。做好此题的关键是正确理解上下文的语境。在此句中，it 是代词，指代 the bike，句意为：“当你离开去同朋友谈话的时候，你的自行车是在这树下吗?”“当然，但当我回来时，自行车就不见了。”现在反过来分析一下，假若选A，将此句判为强调句，句子即为 Was it under the tree that you were away talking to a friend? 若进一步转换为非强调句，句子则为 Under the tree while you were talking to a friend，句意显然很荒唐。
9. It’s more than half a century _____ my grandfather joined the Party and became a servant to the people.
A. when B. that
C. since D. while
【陷阱】容易误选B，认为这是强调句型。
【分析】假若选B，将此句分析为强调句，那么若将此句还原为非强调句就应该是My grandfather joined the Party and became a servant to the people more than half a century. 很显然, 句中的 more than half a century 是一段时间，然而它修饰的谓语动词 joined…became 却是两个终止性动词，这显然不合适。其实，此题应选C，属于“It is＋一段时间＋since 从句”句型，句意为“我爷爷加入党组织成为人民的公仆已有半个多世纪了”。此句的主句谓语也可以用现在完成时态(has been)，但在口语中多用一般现在时代替。
10. It was lack of money, not of effort, _____ defeated their plan.
A. which B. as
C. that D. what
【陷阱】容易误选A，受空格前逗号的影响，误认为这是一个非限制性定语从句，从而误选了A。
【分析】其实，此题最佳答案为C，整个句子为强调句，被强调成分为 lack of money, not of effort。由于句中插入 not of effort 这一结构，干扰了许多同学对 it was lack of money that defeated their plan 这一强调句的认识和理解。
◆最新原创陷阱题（附详解）◆
1.—Who are making so much noise in the garden?
—_______ the children.(www.hxen.com)
A. It is B. They are
C. That is D. There are
2. It is _______ he often fails in exams ______ makes his parents worried about him.
A. what; that B. that; what
C. that; that D. / ; that
3. It is the protection for the trees _______ really matters, rather than how many trees are planted.
A. what B. that
C. 不填 D. which
4. It is _____ my father worked _____ I work now.
A. where, that B. where, when
C. that, where D. that, that
5. Was _____ that I saw last night at the concert?
A. it you B. not you
C. you D. that you
6. It was ten o’clock _____ he came back home.
A. when B. that
C. since D. after
7. It was not until he came back _____ he knew the police were looking for him.
A. which B. since
C. that D. before