1 . 她示意学生们有序地离开教室。(signal) （汉译英）
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2 . She signaled to her students ________ (exit) the classroom in an orderly line covering their heads with their hands. (所给词的适当形式填空)
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3 . He made a quick ________ (离去) to avoid meeting her. （根据汉语提示单词拼写）
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4 . 当Miss Brown感觉到这是全班逃生的最佳时机时，她示意她的学生们抱着头有序离开教室。
The moment Miss Brown sensed it was the best time for the class to make their escape, she_________ the classroom _________ covering their heads with their hands.
The moment Miss Brown sensed it was the best time for the class to make their escape, she
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