The light will be thrown ______ the cause of cancer by research that is now in progress.
| A．to | B．upon | C．in | D．for |
Rather than ________ on a crowded bus，he always prefers ________ a bicycle.
| A．ride；ride | B．riding；ride | C．ride；to ride | D．to ride；riding |
I think teachers should be strict _______ their students ______ studies.
| A．in; with | B．with; in | C．about; in | D．with; for |
The flat rent is expensive, I’ve got about half the space I had at home but I am paying ________ here.
| A．at twice much | B．as much twice | C．much as twice | D．twice as much |
—Do you have enough to _____all your daily expenses?
----Oh yes , enough and spare.
| A．cover | B．spend | C．fill | D．offer |
Go for it while you are young. You can’t avoid _______ your job tomorrow unless you work hard today.
| A．losing | B．to lose | C．to be losing | D．being lost |