Conventions of Composition Rule 137 Practice

1. Wrong: I looked at the cars in the lot and noticed their color.

Better: I looked at the cars in the lot and noticed their colors.

Explanation: Multiple cars come in multiple colors.

2. Wrong: At two years old, Charlie could identify triangles, circles, squares; he knew objects' shape well.

Better: At two years old, Charlie could identify triangles, circles, squares; he knew objects' shapes well.

Explanation: Plural objects come in plural shapes.