| A | B | 
|---|
| The chain on the bicycle broke. | The wheels wouldn't turn. | 
| The students worked with chemicals in science class. | They wore goggles to protect their eyes. | 
| The computer crashed. | The screen went blank. | 
| The water pipe broke. | A waterspout shot up out of a manhole. | 
| The dog jumped out of the soapy tub. | Suds splashed all over the porch. | 
| The temperature dropped to 30 degrees. | We could see our breath in the air. | 
| The flashbulb on the camera didn't work. | The photographs turned out dark. | 
| The cars ran out of gas. | They would not run. | 
| The oven was turned up too high. | The cake burned. | 
| Water ran across the rocks for many years. | They became smooth. | 
| He left the fruit on the counter for two days. | It wasn't good to eat. | 
| Mom touched pins to the balloons. | They popped. | 
| We mixed yellow and blue paint. | It turned green. | 
| The boy fell on the playground. | He skinned his knee. | 
| The class was talking too loudly. | They had to stand at recess. |