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Bob, dinner is ready. Please wash your hands ________ you eat. A.until B.after C.while D.before
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Be more careful and more patient, ________ you will make fewer mistakes in the following experiments.
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You can either email us ________ come to our office for your questions.
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My arm is still painful, I'm going to see a doctor. A.so B.for C.but D.or
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Tony used to be a quiet student, ________ now he is active in class. A.so B.and C.but D.or
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Help others in need, ________ they will help you when you are in trouble. A.and B.but C.or D.nor
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You'd better be careful with the stick, ________ you will hurt yourself. A.so B.but C.or D.and
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(2017河北78题)My friends ________ I often go to the Science Club together.(盲填)
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The beginning of the movie was boring, the end was amazing! A.but B.and C.so D.or
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Diana isn’t here, ______ leave a message on her desk. A.or B.so C.and D.but
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