A.on
B.by
C.for
D.in

A.being there
B.should there be
C.there was
D.there have been
A.will take into
B.will be taken into
C.be taken into
D.take into
A.needn't they.. mustn't
B.mustn't they.. mustn't
C.mustn't they.. needn't
D.shouldn't they.. should