优优班--学霸训练营 > 知识点挑题
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            • 1. -Why do you like koalas?
              -______they are smart.      
              [     ]

              A. Because      
              B. So          
              C. But          
              D. And
            • 2. — Why is she absent?
              — She's absent ___________ she is ill.
              [     ]

              A. because
              B. so
              C. if
            • 3. Liu Tao likes summer best ______________ he can go swimming.
              [     ]

              A. so
              B. because
              C. before
            • 4. I like music, ____________ I don't like math.
              [     ]

              A. and
              B. but
              C. But
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