Students are often warned that anyone who leaves the classroom at night must remember to _____ all the lights, or he will be fined.

From the _____ look on his face,I know he has failed in the exam. [ ]

111. Trees are cut down merely for fuel and wildlife is killed simply for food. It is time to ____ an end to waste.

After he heard the ______ news that Wang Yaping gave chidren a lesson in China’s new manned spacecraft Shenzhou-10, he was very __________.

He asked me __________