Scientists have reached the conclusion _____ the temperature on the earth is getting higher and higher . A.what B. that C.it D. because 2. I’m not _____ to think I can succeed without efforts . A.naive enough B.enough naive C.naively enough D.enough naively 3. Nowadays the Internet has become an important way of communication , _____ us to keep in contact with our friends and relatives in the distance . A.to permit B.permitting C.permitted D.being permitting 4.He has been practicing English for eight years , and now he can speak English as fluently as his English teacher _____ . A.is B.was C.does D.do 5.Because of the thick smog , many people move to Sanya in Hainan , believing it would be a wonderful place to _____ in . A.Live B.living C.be living D.be lived