根据句意，用所给单词的适当形式填空。

1．It gives us much________（please）to welcome our new teacher．

2．We are looking forward to ________ （visit）Shanghai World Expo．

3．Thanks for your________ （invite）．I'll be there on time．

4．This was one of the worst________ （nature）disasters in the history of the United States．

5．Students at school shouldn’t get their ears________ （pierce）．

根据所给汉语将下列句子补充完整（每空一词）。

1．他在这个诊所里当了三年医生了。

He has________ ________ ________ ________ in the clinic for three years．

2．体育迷们有很多机会去观看激动人心的比赛。

Sports fans have________ ________ chances________ ________ exciting competitions．

3．我不知道他是否故意把这本书落在这里。

I don’t know________ he ________ the book here________ ________．

4．你同意他村定的计划吗?

Do you ________ to the plan that he has________ ________ ________?

5．到会议结束时他还没有露面。

________ the time the meeting was________，he hadn’t________．

根据下面提供的对话情景，从下列7个选项中选择正确答案，使对话连贯、完整。其中有两项是多余的。

A：Today we are going to talk about a great invention．It looks like a human being．  1 

B：It’s a robot．  2 

A：Of course not．The first robot was invented in 1921．

B：  3 

A：Sure．They can take the place of humans to do some boring work．They can also do a lot of dangerous work instead of humans．

B：  4 

A：No．Robots can do a lot of work instead of people in many ways，but people wouldn’t be replaced by robots．  5 

B：We get it．

Why are you ______ a skirt? It's not suitable for this cold weather.

A．wearing              B．putting on                   C．buying               D．selling

--I'd like to post a letter. Could you tell me how to get to the ______, Spotty?

--Sure. Turn to the left, go straight and you'll find one.

A．drugstore      B．public restroom            C．Newtown Museum              D．post office

Can you wake the person ______ is pretending to be asleep?

A．whom             B．who          C．which             D．whose

By the time I was three, I ______ learning English. I've been learning it for fifteen years.

A．had finished         B．had stopped        C．had started         D．had held on to

--Andy, where is your sister?

--She ______ university. She won't return until July 15.

A．has gone to         B．has been to       C．went to        D．goes to

David ______ a letter to his friend last night. When he got up this morning he continued writing it.

A．wrote         B．read           C．was reading            D．was writing