They watched the cars go by the house.

We’re watching the game from the stands.

The ballerina danced gracefully to the music.

We will be dancing tomorrow.

She studied her math book for the test.

I was studying math so I would understand it.

I stopped talking so I could listen.

We will be stopping an hour after we start.

She dried the clothes by hanging them.

The plants are drying due to the drought.

Strange things happened at the old house.

I saw what was happening and went to help.

I noticed a new crack in my windshield.

The inspectors are noticing every detail.

The thief robbed the bank.

Who has been robbing my food?

She slipped on the ice and nearly fell.

I like slipping in the water slide.

I hurried and ran to catch the bus.

I am hurrying in hopes of catching my bus!

You asked me a question and I answered.

I am answering the phone because it is ringing.

I magnified a bug with a lens to enlarge it.

I am magnifying the bug so I can see it better.

The roadblock interfered with our drive.

The sheep are interfering with my bike ride.

Disposable cups are thrown after one use.

It is a hazardous and risky job.

Leakage from a landfill can pollute local groundwater.

Emissions are dangerous for the respiratory system.