If Tom _____ my advice, he wouldn't have lost his job.
I have bought two ball pens , _______ writes well.
------Why do you turn back?------ Oh, the bridge ahead_______.
People in the west make_______ a rule to buy Christmas presents for their relatives and friends.
I remember everything ______it had happened yesterday.
It is required that students______ mobile phones at school, so seldom_______ them using one.