| A | B |
| watched | We ___ the baby bird fly. |
| watching | What are you ___ on TV? |
| danced | We ___ for two hours. |
| dancing | I think ___ is good exercise. |
| studied | Have you ___ for the test? |
| studying | I like ___ with my friends. |
| stopped | The car ___ for the red light. |
| stopping | The ice made ___ difficult. |
| dried | Meg ___ her wet hair. |
| drying | The clothes are ___ on the clothes line. |
| happened | The accident ___ quickly. |
| happening | Good things are ___ all the time. |
| noticed | I ___ the new car right away. |
| noticing | Ted is always ___ changes. |
| robbed | Our team was ___ of a touchdown. |
| robbing | Rabbits keep ___ our garden. |
| slipped | My bike tires ___ in the mud. |
| slipping | We were ___ on the wet floor. |
| hurried | Zach ___ in as the bell rang. |
| hurrying | We were ___ to the bus stop. |
| answered | Lucas ___ the phone. |
| answering | Are we ___ the questions correctly? |
| magnified | The microscope ___ the cells. |
| magnifying | A ___ glass helps us read fine print. |
| interfered | The player ___ with the pass. |
| interfering | I'll never finish my work if you keep ___. |