ⅰ.单项填空
1．(2014·济宁高三模拟)—jenny, it won't be long before i receive the admission letter from oxford university.
—________
a．good luck！ b．congratulations!
c．why so soon? d．don't worry.
2．(2014·江苏南通二模)carbon dioxide is said ________ the earth twice as quickly as previously feared.
a．to be heated b．to be heating
c．to have heated d．to have been heated
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