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s important that we (take) good care of the patient. 答案: should take only I (know)how to operate an electronic puter as you do. 答案: knew is high time that we (begin) our speech. 答案: began/should begin a pencil is partly in a glass of water, it looks as if it (be) broken. 答案: were electricity, human life (be) quite different now. 答案: would be hesitated for a moment before kicking the ball , otherwise he w