some problems

some problems
1、Excuse me,but I don't think you can take photos here.
Sorry,I____this is no-photo zone.
A.don' t know B.didn't know
C.have no idea D.haven't know
2、I won't go to see the film because I___my ticket.
A.lost B.have lost
C.will lose D.didn't lose
3、Hardly___the bell___when the teacher came in.
A.did;ring B.would;ring
C.has;rung Dhad;rung
4、We'd better do our Christmas shopping.Time_____
A.is running out B.is run out
C.have been ran out D.is running out of
5、It was two years since I ____her.
A.had met B.was meeting
C.met D.had been meeting
6、be going to do 和will do 有什么区别?