Does your uncle still smoke?—He ____________given it up. It’s two years ever since he ____________.

Clearly, in a system ______ every decision is made on the basis of tradition alone, it may be difficult to achieve progress [ ]

I ________ thank you too much for all your help to my son while we were away from home

Though he had changed a lot, I _________him at once.

What should we _______ in class We should pay attention _______ notes when necessary.