THE AIR ______ THE EARTH IS BECOMING THINNER. THE AIR ______ TH...

84. - 342 CAU TRAC NGHIEM ON THI TN HOT 84. - 342 CAU TRAC NGHIEM ON THI TN HOT
342 CAU TRAC NGHIEM ON THI TN HOT
84. The air ______ the earth is becoming thinner.A. surrounding B. rounding C. involving D. floating