【推荐1】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.

【推荐1】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.

【推荐2】一看到我来了，他就笑个不停，这使我很困惑。
At the sight of my coming, he didn’t stop laughing，________________．