14.—Have you been to the Great Wall?
—Perhaps not in my memory.________，it might have been during my early childhood.
A.If any B.If so
C.If ever D.If not
答案：C
解析：句意为：——你去过长城吗?——在我记忆中好像没有去过。要是去过的话，或许是在童年。if ever如果曾经，该句完整形式为：If I have ever been to the Great Wall，…if any如果有一些(表示数量);if so如果那样;if not如果不。
15.Not until we have had a chance to discuss it thoroughly ________ perfectly.
A.the problem has been settled
B.has the problem been settled
C.will the problem be settled
D.the problem was settled
答案：C
解析：句意为：直到我们有机会充分讨论这个问题，它才能被圆满解决。not until置于句首，主句用部分倒装，助动词置于主语前;由until引导的时间状语从句用的是现在完成时(表即将完成的动作)可知，主句用一般将来时。
16.________ and we’ll get everything ready for the taking off.
A.Have one more hour
B.One more hour
C.Give one more hour
D.If we have one more hour
答案：B
解析：考查“名词短语+and+一般将来时”。A项的主语是you，前后句子意义不连贯;如选C项，则应改为Give us one more hour。
17.________，he talks a lot about his favorite singers after class.
A.A quiet student as he may be
B.Quiet student as he may be
C.Be a quiet student as he may
D.Quiet as he may be a student
答案：B
解析：as引导让步状语从句，将表语提前，若表语是单数可数名词，则要把不定冠词省略。
18.Barry must have visited the Eiffel Tower before，________he?
A.mustn’t B.hadn’t
C.hasn’t D.needn’t
答案：C
19.It was ________ he came back from Africa that year ________ he met the girl he would like to marry.
A.when;then B.not;until
C.not until;that D.only;when
答案：C
解析：考查强调句型。根据It is…that结构可知。
20.Not until I came home last night ________ to bed.
A.Mum did go B.did Mum go
C.went Mum D.Mum went
答案：B
解析：倒装语序的用法。not until位于句首时要用半倒装的句型，即把助动词did提到主语Mum的前面。所以答案为B项。
21.________ surprising it is you should not know what has happened!
A.What B.How
C.That D.It
答案：B
解析：句意为：你竟然不知道发生的一切，真是太令人吃惊了。由于空格后的surprising是形容词，所以用how。
22.Mary is the only one of the teachers who ________ a little Chinese because she is one of my friends who ________ been to China.
A.know;have B.knows;has
C.knows;have D.know;has
答案：C
解析：此句包含了两个定语从句，关系代词都在从句中作主语。关系代词的单复数应与定语从句的先行词的单复数保持一致。第一个从句的先行词是the only one of the teachers，指唯一的老师，从句谓
语动词应用单数形式。第二个定语从句先行词是my friends，表示的是复数概念，所以从句谓语用复数，因此答案为C项。
23.If you have a job，________yourself to it and finally you’ll succeed.
A.do devote B.don’t devote
C.devoting D.not devoting
答案：A
解析：此处应是祈使句，又有谓语动词的强调要借助助动词do，故选A项。句意为：如果你有了一份工作，付出努力去做它，最后你一定能成功。
24.The teacher together with the students ________ discussing Reading Skills that ________ newly published in America.
A.are;were B.is;were
C.are;was D.is;was
答案：D
解析：考查主谓一致。A together with B作主语时谓语动词与A的单复数保持一致;第二空为定语从句that指代Reading Skills，由于Reading Skills是书名所以谓语动词用单数。
25.Unsatisfied ________ with the payment，he took the job just to get some work experience.
A.though was he B.though he was
C.he was though D.was he though
答案：B
解析：as，though引导让步状语从句时，要把表语、状语或谓语动词提到主语前边(though引导从句时也可不提前)。