Раскрыть скобки
1)If I (see) you in the street yesterday, of course I (say) "Good morning".
2) I'm storry I threw the newspaper away. I (not throw) it away if I (know) you had wanted it.
3) Why didn't you asked me to help you? Of course I (help) you if you (ask) me to.
4) I'm sorry I couldn't come to the cinema with you last Friday. I (come) if I (not be) so busy.
5) I (not leave) the office early yesterday if I (not finish) my work.

К сожалению, в предложениях, времена в правой и левых частях должны различаться, так же необходими вспомогательные глаголы(

Saw, said,threw, knew, helped, asked,came,wasn't,didn't left, didn't finished.