On weekends I like to with my friends in the supermarket.
It’s sixty kilometers____ here to the school.
The children were made ____ 12 hours a day.
—Where are Tom and Mary? --____ Tom _____ Mary is busy with their homework. You’d better play with.
—Jack, what do you usually do after supper? --Well, I____ stay at home and watch TV, but now I ____ taking a walk.'
–We should do what we can _____ the endangered animals.` --Yes, it’s duty_____ them.