5.I didn't like aunt Lucy,who __________ without warning and bringing us presents.

A.always turned up

B.has always turned up

C.had always turned up

D.was always turning up

4.You'd better get all the work _________ before you leave.

A.finishing　　　　　　　　　　　　　　　　　　　　 B.to finish

C.finished　　　　　　　　　　　　　　　　　　　　　 D.be finished

3.At midnight the enemy attacked _________.

A.without warning　　　　　　　　　　　　　　 B.without notice

C.without permission　　　　　　　　　　　　　 D.A or B

2.They had to_________ before they finished the course because they were not well disciplined.

A.drop in　　　　　　　　　　　　　　　　　　　　　　　　 B.drop out

C.drop off　　　　　　　　　　　　　　　　　　　　 D.drop by

1.It looks as if they are going to _________ us a lot of money for the concert hall.

A.demand　　　　　　　　　　　　　　　　　　　 B.cost

C.charge　　　　　　　　　　　　　　　　　　　　　　 D.ask

5.I think Maglev train costs too much money.

In _________ _________,Maglev train is _________ _________ expensive.

4.Doctors can learn a lot of skills from working on animals.

Doctors can _________ more _________ from working on animals.

3.How do you feel about the animal experiments?

What do you _________ _________ the animal experiments?

2.If a medicine works with animals there is a high chance that it also works with people.

If a medicine has _________ _________ animals,it _________ _________ _________ that it has _________ _________people.

1.My cell phone is power off.I have to store power into it.

I have to _________ my cell phone fully _________ before I use it again.