During the examination we are required to stay in our seats, keep our eyes on our work, ____ to anyone.
The computer was used in teaching. As a result, not only________, but students became more interested in the lessons.
Edward, you play so well. But I_____________you played the piano.
— Kingston was late for class this morning again. — You know, _________.
You didn’t take his advice. ________ his advice, you ________such a stupid mistake.
The radiation amount of a mobile phone for two half-hour periods per day is equal to ________ to an X-ray for ten seconds.