Choose the correct form of the verb (There are no mixed

Choose the correct form of the verb (There are no mixed type sentences)
1. (??)If she were here, she ______________ what to do.
(?)knew
(?)had known
(?)would know
(?)would have known
2. (??)If Joe ______________ earlier, he would get to institute on time.
(?)got up
(?)had got up
(?)would get up
(?)would have got up
3. (??)He ______________ the problem now if he were concerned about it.
(?)discussed
(?)had discussed
(?)would discuss
(?)would have discussed
4. (??)If I knew the address, I ______________ it to you.
(?)gave
(?)had given
(?)would give
(?)would have given
5. (??)If I had known that you were in hospital, I ______________ you.
(?)visited
(?)had visited
(?)would visit
(?)would have visited
6. (??)If the fire ______________, their house wouldnt have been destroyed.
(?)didnt happen
(?)hadnt happened
(?)wouldnt happen
(?)wouldnt have happened
7. (??)If the sound ______________ so loud, she wouldnt be so nervous.
(?)werent
(?)hadnt been
(?)wouldnt be
(?)wouldnt have been
8. (??)If he ______________ the door open, his cat wouldnt have eaten the fish.
(?)didnt leave
(?)hadnt left
(?)wouldnt leave
(?)wouldnt have left
9. (??)I ______________ a taxi if I had realized that it was such a long way.
(?)took
(?)had taken
(?)would take
(?)would have taken
10. (??)If you had arrived ten minutes earlier, you ______________ a seat.
(?)got
(?)had got
(?)would get
(?)would have got