优优班--学霸训练营 > 知识点挑题
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            • 1. My mom often tells me          is good for my health to go to bed early and get up early.(  )
              A.this
              B.that
              C.it
            • 2. _______ is very dangerous to swim alone in the river.(  )
              A.It
              B.This
              C.That
            • 3. Is it always easier ________ friends than to keep them?(  )
              A.making
              B.make
              C.to make
              D.made
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