1 . I had a headache, ____________ (因此) I could not go to your birthday party. (根据汉语意思单词拼写)
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2 . These patterns are unique to each person. T________ (因此), the keyboard can determine people’s identities. (根据中英文提示填空)
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3 . Climbing mountains is very demanding,___________ (因此) we need to make full and early preparations. (根据汉语意思单词拼写)
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