I’ll never forget the most wonderful holiday ________ we stayed in the country with my grandparents.

.— I’m dead tired. I can’t walk any farther,Jenny.— ________, Tommy. You can do it!

You return the book now. You can keep it until next week if you like.

One ought ______for what one hasn’t done.

People along the river didn’t allow them to ________ a factory so as not to pollute the water.