________warmly for his excellent work，the model worker was too _______ to fall asleep．
| A．Praising；excited | B．To praise；exciting |
| C．Praised；exciting | D．Praised；excited |
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It was ______ the 19th century_____ heat was considered to be a form of energy.
| A．not until; that | B．until; that |
| C．not until; when | D．until; when |
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Don’t you think ti is unfair for about two thirds of the population to have no_____ to health care?
| A．access | B．basis | C．entrance | D．guarantee |
.
When Bill Gates decided to stop schooling and created Microsoft in 1975, he ______ law at Harvard University.
| A．studied | B．had studied | C．was studying | D．would study |
.
______ pressure the U.S. government put on the Chinese government, China would stick to its own policy of exchange rate.
| A．However | B．Wherever | C．Whoever | D．Whatever |
.
. The online exposure of the diary of a government official made the public realize the extent ______ the Internet affects the society.
| A．that | B．to which | C．what | D．upon which |