请回答以下几道英语题.请分别说明理由,
I hope to()in the exam.A.success  B.be success  C.successful  D.be successful
He will come to see you,so you () go to his house.
A.not need  B.don't need  C.not need to  D.don't need to
 3.My parents ()me to be a doctor.A.hoped  B.wanted  C.decided  D.needed
 4.()!The train is coming.A.Careful  B.Take care  C.Be careful of  D.Take care of
 5.Don't feed the () this ().A.food with;cat  B.food;cat  C.cat with;food  D.cat to;food