----How often were you late for school last term. Lisa? ---- _______. I got to school early every day. 

—Can I talk to you for a minute?　　         —Sure. I have ______ time.

---Have you finished doing the work_________?---Not_________.

Bicycling is a good exercise;________ it does not pollute the air.

Look, There’s __________ sheep on the hill and there are _______ children, too.