Correct form of words in the brackets

3. If we (have) ________ flying car now, we (solve) _______ the problem of traffic jams.
4. San Francisco ( often call ) __________ " The windy city"
5. It's a pity you missed the party. If you (come) _________ you (meet) _________ my friend from Hungary.6.If we ( have) _____ some tools, we ( be) _________ able to repair the car, but we haven't had any with us.
7. Thank you for your help. If you ( not help) _____ me, I ( not pass) ______ the examination.