I wouldn’t think it     to ask him to    the club—he’ll only refuse.

He shouldn’t have been so     about food, otherwise he would be healthier now.

 Nothing can separate the two, because they have a           friendship foundation dating back to their childhood when they had to depend on each other to survive in the war. 

It’s bad manners to keep _______ when your teacher asks you a question.

Professor Smith has written some short stories , but he is _____known for his plays .