1.   After walking for hours in the hot sun, his mind began playing tricks on him.

2.   During the service, her mind began to wander.

3.   Her mind was beginning to wander.

4.   The teacher talked on and on and my mind began to wander.

5.   As so often happens on these occasions, my mind began to wander.

6.   At this turn, the mind begins to shimmy.

7.   But as we entered the arms race with the Soviet Union, my mind began to change.

8.   But Smith said his mind began turning with culinary possibilities as soon as he tasted the wine last summer at the Palisade winery.

9.   Eventually, your mind begins to wander during these slice-of-history talkfests.

10.   He is physically unimpaired afterward, as coy and debonair as ever, but his mind has begun playing tricks.