NEW SOURCES OF ENERGY ARE CONSTANTLY BEING LOOKED FOR _______.A....

45. - DE THI THU DH THAN KHAO CO DAP AN
Tiếng Anh DE THI THU DH THAN KHAO CO DAP AN
45. New sources of energy are constantly being looked for _______.A. as fossil fuels continue to dwindle B. although fossil fuels continue to dwindleC. so that we continue to reduce fossil fuels D. fossil fuels continuing to dwindleVII. Mark the letter A, B, C, or D to indicate the correct answer to each of the following sentences.