【2012江苏泰州】Cross the road carefully, ____you’ll keep yourself safe.
Daniel is always willing ________ others _________ with their Math.
---____________________?---He is generous and polite.
_____________ each class, we often do some exercises.
We are _______ tired to go any ____________. Let’s stop to have a rest.
--- Can I have ________________________?---Of course. Here you are.