1.   His face clouded again at the thought.

2.   His face clouded over in disappointment.

3.   His face clouded when he saw her.

4.   When mentioned her name, his face suddenly clouded over.

5.   Rory side-stepped, getting well clear, his face clouded with anger.

6.   His face clouded instantly with concern.

7.   His face clouded, and the students asked if he wanted to go on.

8.   His face clouded into a large frown.

9.   His face clouded over as he palmed the ball and cocked his arm, staring at the official who had made the call.

10.   Students, whose faces clouded over at the mention of the fight, said there are rumors about what caused the conflict.