13.( )Elephants carry wood by people long time ago.
A.was trained B.trained to C.train to D.were trained to
12.( )We should take some actions to people from wild animals.
A.prevent,kill B.prevent,killing C.preventing,kill D.prevent,to kill
11.( )Mr Dong live in the old Walled City. So he knows it very well.
A.used to B.is used to C.has used to D.used to
10.( )Dr. Lin was not on so many patients every day.
A.used to working B.used to works C.used to work D.used working
9.( )My father in a shoe factory.
A.used to working B.used to works C.used to work D.is used to work
8.( )Our computer teacher taught us new .
A.skills and knowledge B.skills and knowledges
C.skill and knowledge D.skill and knowledge
7.( )He hopes to the moon some day.
A.to fly B.fly C.flying D.flies
6.( )The boy used a knife the back door.
A.open B.to open C.opens D.opening
5.( )Millie is trying her best Tom with his Chinese.
A.help B.helping C.to help D.helps
4.( )We hope people will support our work by to ORBIS.
A.sending donations B.send donations
C.sending donation D.send donation