He （） himself a great deal of trouble if he had taken the advice of his lawyer last year.

Wed better wait till December Bill （） his exam by then，so hell be able to enjoy himself.

A.will have had
B.has had
C.is going to have
D.will have

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A good deal of research is being carried out nowadays （） the cause of juvenile crime.It is obvious that one of these is an unsatisfactory home background.

A.about
B.on
C.into
D.over

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