Parts 4 and 5

Choose the correct form of the verb in parentheses and write it in the blank.

1		When Einstein (had / has) extra time during the day, he wrote down his ideas.
2		If he had enough time, he (wrote / had written) out long mathematical equations.
3		Unless he had no time, he (would / will) usually write down notes each day.
4		As Einstein (was doing / has done) his work, he was also thinking.
5		While Einstein was working in the patent office, he (had / was having) plenty of time to think.
6		When Einstein was a child, he (was showing / showed) no early evidence of genius.
7		I'm going to call you as soon as I (finish / will finish) .
8		I won't call you before I (have / had) finished.
9		I should have worked until I (finished / have finished) .
10		While (I'm working / I've worked) , I won't think about my vacation.
11		If I (finish / will finish) my work, I might go to the party.
12		Unless I (finish / finished) my work, I am not going to go to the party.