—Will you join us in the party this Saturday evening? —If I ____ ,I would ;but I will have left for Japan on business by then.

 I remember the whole thing _____ it happened yesterday.

If you________first aid correctly，the old man would be saved.

But for the arrival of the police,  you __________ killed yesterday.

 It is hard for me to imagine what I would be doing today if I_____ in love , at the age of seven , with the library in my hometown .