1.In the world ,there are over 2000 varieties of snakes,____

1.In the world ,there are over 2000 varieties of snakes,__________are harmless to humans.
A.mostly they B.most of them C.most of which D.which most
2.Mary didn't have any chance to go to the cinema last night at all bucause she was busy __________for the exam tomorrow.
A.to prepare B.to be prepared C.being prepared D.preparing
3._________a river on land,an ocean aurrent does not flow in a straight line.
A.Alike B.Like C.Likewise D.Likely
4.I wish I_________longer this morning,but I had to get up and go to school.
A.could have slept B.slept C.might have slept D.have slept
5.The mother didn't know who __________for the broken glass.
A.blamed B.be blamed C.to blame D.would blame
6.By this time tomorrow,you _________Shanghai.
A.will have reached B.will reach C.would have reached D.is going to reach
7.If he had not come to live in Sen Francisco last month,he ___________meet his friends now.
A.does not have to B.will not have to C.would not have to D.would not have had to
8.___________the correct international and data,the computer cauesd a serious problem to the company.
A.Not having been input B.Not inputting C.Not being input D.Not having input
9.We should try our best to get there by all _________before he has a chance to tell his mother the news.
A.methods B.measures C.means D.mysteries
10.Although there were strong protests,the king didn't want to reduce the heavy burden that he had __________upon people.
A.lain B.laid C.lied D.lay