Put the verbs in brackets into the correct form

Exercise 1: Put the verbs in brackets into the correct form:
1.    If I see him , I _____ (give ) him a gift.
2.    If I have a typewriter, I _____ (type) it myself. 
3.    If I have known that you are in hospital, I _____ (visit) you.
4.    You will make better progress if you _____ (attend) class regularly. 
5.    If I _____ (know) his telephone number, Iwill give it to you. 
6.    If you _____ (arrive) ten minutes earlier, you will have got a seat. 
7.    If he work more slowly, he _____ (not make) so many mistakes.
8.    I  won’t drink that wine if I _____ (be) ill.
9.    If I _____ (find) a cheap room, I will stay a fortnight.
10.    A lot of people _____ (be) out of work if the factory close down.