The new tax would force companies to __________energy-saving measures.
| A．adapt | B．adopt | C．adjust | D．address |
—Where is our English teacher?
—She is in the classroom, _____ the exercises _________ the students have done at home.
| A．explaining; / | B．explaining; for |
| C．explained; to | D．explained; from[ |
. I feel like drinking some water, but there is ________ left in the bottle.
| A．nothing | B．no | C．none | D．a little |
----Have you got the result?
----No, It will be some time ________we know the result.
| A．when | B．since | C．if | D．before |
Little ______about his own health though he was very ill.
| A．he cared | B．he cares | C．does he care | D．did he care |
The light will be thrown ______ the cause of cancer by research that is now in progress.
| A．to | B．upon | C．in | D．for |