building skills for the toefl ibt second
BUILDING SKILLS FOR THE TOEFL Ibt
... which means the writer gives first-hand information, or if the source is a secondary source, which means the writer gives second- hand information. Another point to consider is whether the source ... 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 ai...
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