rove your health, you can_________ 25—30 minutes three or four times a week to do simple things such as walking,cycling or running

_________ I come back before five o’clock–No, you________. But you can’t be back later than seven o’clock.

I caught the last bus from town , but Harry came home ______ that night .

Look out! The traffic is moving fast. It’s________ dangerous ________ cross the street.

We won’t forget the finto the people all over the world．