The government will force companies to _____possible measures to reduce air pollution. [ ]

orkers ____ the mine disaster. Afterthe injured ___ to the hospital, doctors and nurses immediately got down tosaving their lives.

Has Tom finishedwriting his essay today — I haveno idea. He ______ it this morning.

I like reading very much because reading can bring me .

9 _____frightened us ____the electricity was suddenly cut off, which threw all of us into the dark