A.to meet you
B.having met you
C.be meeting you
D.to have met you

A.has to start
B.must to start
C.have to start
D.can start

A.have to
B.don‘t have to
C.must
D.mustn‘t

A.must
B.mustn‘t
C.have to
D.don‘t have to

A.that he saw
B.had he seen
C.did he see
D.that he had seen

A.people can do what
B.can people do what
C.people can not do what
D.can‘t people do what

A.it took
B.it takes
C.it is being taken
D.it has been taken

A.has taken
B.has been taking
C.is taken
D.has been taken

A.played
B.play
C.playing
D.plays

A.to work
B.work
C.working
D.worked

A.Bid
B.To bid
C.Bidding
D.To be bidden