1.______ the early flight, we ordered a taxi in advance and got up very early.

A Catching

B Caught

C To catch

D Catch

解析：选C。C 考查非谓语动词。句意：为了赶上早班飞机，我们提前预定了出租车并且起得很早。这里逻辑主语是we，空中用不定式作目的状语，表示提前预定出租车并且早起的目的。故选C。

2.—Did you enjoy the party? —Yes. We ______ well by our hosts.

A were treated

B would be treated

C treated

D had treated

解析：选A。A 考查时态和语态。句意：——你们喜欢这个聚会吗？——是的，主人招待地我们很好。根据上一句中的did可知用一般过去时；且we和treat是动宾关系，用被动语态。空中应用一般过去时的被动语态，故选A。

3.The park was full of people, ______ themselves in the sunshine.

A having enjoyed

B enjoyed

C enjoying

D to enjoy

解析：选C。C 考查非谓语动词。句意：公园里挤满了人，他们在阳光下玩的很快乐。 逻辑主语people和enjoy之间是主谓关系，且非谓语动词动作与谓语动词的动作几乎同时发生，故用现在分词的一般式。故选C。注意：A选项为现在分词的完成体，它是发生在谓语动词之前的，有先后关系。D选项不定式表示动作还没有发生。

4.Opposite is St.Paul's Church, ______ you can hear some lovely music.

A which

B that

C when

D where

解析：选D。D 考查定语从句。句意：对面是圣保罗教堂，在那里你可以听到一些优美的音乐。先行词是St. Paul's Church，从句是完整的句子，可推断出关系词在从句中作的是地点状语。用where，故选D。注意：定语从句一定要看先行词在从句里面充当什么成分，这样才能确定好关系词。

5.He is a shy man,______ he is not afraid of anything or anyone.

A so

B but

C or

D as

解析：选B。B 考查连词。句意：虽然他是一个很腼腆的人，但是他不害怕任何人和事。由句意可知为转折关系，故选B。

6.In the last few years, China ______ great achievements in environmental protection.

A has made

B had made

C was making

D is making

解析：选A。A 考查时态。句意：在最近的几年里，中国在环境保护方面已经取得了巨大的成就。由“in the last few years”可知，此处应用现在完成时。故选A。

7.—Did you have difficulty finding Ann's house? — Not really. She ______ us clear directions and we were able to find it easily.

A was to give

B had given

C was giving

D would give

解析：选B。B 考查时态。句意：——你们找到安的家有困难吗？——真的没有，她已经给了我们清晰的说明，我们能够很容易地找到它。由句意可知give这一动作发生在“我们找到安的家之前”，用过去完成时。故选B。注意：时态题要么找出标志性的时间状语，要么在语境中去理解时间节点。这样才能有得放矢。

8.You won't find paper cutting difficult ______ you keep practicing it.

A even though

B as long as

C as if

D ever since

解析：选B。B 考查状语从句。句意：只要你坚持练习剪纸，你就不会觉得剪纸难了。 even though 即使；as long as只要；as if 仿佛，好像；ever since 自……以来。结合句意，故选B。

9.—Can't you stay a little longer? —It's getting late. I really ______ go now. My daughter is home alone.

A may

B can

C must

D dare

解析：选C。C 考查情态动词。句意：——你不能再多待一会儿吗？——天要黑了，我真的现在必须走了，我的女儿独自呆在家里。may可以，可能；can 能够，可以；must必须；dare 敢，敢于。结合句意，故选C。

10.—Dr.Jackson is not in his office at the moment. —All right. I ______ him later.

A will call

B have called

C call

D will be calling

解析：选A。A 考查时态。句意：——Dr. Jackon现在不在他的办公室里。——好的，过一会儿我再给他打电话。由句中的later可知，表示的是将来要执行的动作，此处用一般将来时，故选A。

11.If ______ for the job, you'll be informed soon.

A to accept

B accept

C accepting

D accepted

解析：选D。D 考查非谓语。句意：如果录用你做这份工作，你将会很快得到通知。 本句省掉了主语you,且you和accept之间为逻辑上的动宾关系，用过去分词，故选D。

12._____ the damage is done, it will take many years for the farmland to recover.

A Until

B Unless

C Once

D Although

解析：选C。C 考查连词。句意：一旦农田造成损害，要花费许多年的时间才能恢复。until直到；unless除非；once一旦；although尽管。由句意可知，故选C。

13.I truly believe ______ beauty comes from within.

A that

B where

C what

D why

解析：选A。A 考查名词性从句。句意：我真的相信美来自人的内心。宾语从句意思完整，不缺任何成分，所以使用that。That起连接作用，也可以省略。故选A。

14.If I _____ it with my own eyes, I wouldn't have believed it.

A didn't see

B weren't seeing

C wouldn't see

D hadn't seen

解析：选D。D 考查虚拟语气的用法。句意：如果不是亲眼看到，我就不会相信这件事。由主句中的谓语动词wouldn't have believed 可知是对过去情况的虚拟，虚拟条件句的谓语动词用过去完成时。故选D。

15._____ we understand things has a lot to do with what we feel.

A Where

B How

C Why

D When

解析：选B。B 考查名词性从句。句意：我们怎样理解事物与我们所感觉到的东西有很大关系。分析句子结构可知“________ we understand things”为主语从句，结合句意可知，故选B。