Can you think of some cases __________drivers obviously knew the traffic rules but did not obey them.
I find it difficult to keep ________ of my old friends.
—It’s not wise of you to go on a trip in such weather. —Indeed! I didn’t became _____of it until on half the way.
— How much shall I pay for the phone cell? — You _______. It’s free of charge.
Life is limited, _____there is no limit to_____ the people.
We all write _______ , even when there is not much to say.