I _____ to help you but I was not able to spare any time. I _____a paper last night and I’ll have to finish it today.
________ the past,our life is much better.
________ for several weeks,the city needed food.
I went to see him,________ him out.
Volunteering gives you a chance ________ lives, including your own.
________ basic first-aid techniques will help you respond quickly to emergencies.