Mary ___________to see you．She．_________ for you downstairs at the moment．
| A．has come；is waiting | B．came；is waiting |
| C．has come；waited | D．came；was waiting |
. 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 |
—Why was he unhappy yesterday?
—A letter from home ______ an attack of homesickness.
| A．set off | B．set out | C．set about | D．set up |