老师不在的时候,我们也能保持安静. We can keep quiet when the teacher ______ ______ .

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老师不在的时候,我们也能保持安静.Wecankeepquietwhentheteacher____________.老师不在的时候,我们也能保持安静.Wecankeepquietwhentheteac

老师不在的时候,我们也能保持安静. We can keep quiet when the teacher ______ ______ .
老师不在的时候,我们也能保持安静. We can keep quiet when the teacher ______ ______ .

老师不在的时候,我们也能保持安静. We can keep quiet when the teacher ______ ______ .
老师不在的时候,我们也能保持安静.

We can keep quiet when the teacher ______ ______ .
应填:is out

注:be out 外出;离开