Can I see the headmaster at the moment,please — I’m afraid not. He _______out. He_____in 10 minutes.

It’s rather windy today. Put on some warm clothes, _________ you’ll catch a cold.

I think this problem is _______ that one.

He is no longer in good condition, and his ability to work is limited. I ____________ him to give up the job but failed.

You cannot be ____ careful when you drive a car