BUILDING SKILLS FOR THE TOEFL Ibt
. bladder, so they use their forward movement to control their vertical position. The tail is like the shark’s propeller. The shark swings it back and forth to move forward. In an airplane, this forward movement. bladder, so they use their forward movement to control their vertical position. The tail is like the shark’s propeller. The shark swings it back and forth to move forward. In an airplane,...
Ngày tải lên: 16/08/2013, 20:38