几道简单的英文题,好的话还可以加分

几道简单的英文题,好的话还可以加分
1 David said that he was arriving _________ (at,on ) the morning of Friday.
2 He really _________ (needs,need) a job,doesn’t he?
3 Susan is a secretary.She often works _________( on,in ) a computer.
4Nowadays we can see many females work as _______________( policewoman).
5She was afraid and she went __________ ( away,out ).
6( ).A lot of people live in Ben’s blocks and they do different _____.
A.jobs B.job C.works D.a piece of work
7( ) “You’d better ______ it yourself ,” said the teacher .
A.not to do B.not do C .did D .doing