1.If he had taken my advice, he-.a rich man now.

a.would be

b.would have been

c.had been

d.were

2.If I-.that you were in hospital, I-.

a.had known/ would have visited

b.had known/ would visit

c.knew/would visit

d.knew/ would have visited

3.I'd have visited you if I-.you-.in hospital.

a.had known/were

b.had known/are

c.have known/were

d.knew/had been

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