The earth________ on the sun for its heat and light.

The Red River________ very fast today-much faster than yesterday.

I________ "Chicken soup for the soul" but I haven’t finished it yet.

We________ a part next week. Would you like to come?

I don't feel good. I ________ home from work tomorrow.

I ________ my key. Can you help me look for it?

On July 20, 1969, Neil Armstrong ________ down onto the moon, the first person ever set foot on another planet.

If coastal erosion continues to take place at the present rate, in another fifty years this beach________ any more.

In the last two decades, space exploration___great contributions to weather forecasting.

They ________ this course by next June.

Alan took a photograph of Sandra while she________

The phone________ constantly since Jack won the first prize this morning.

Last night Tine________ in bed when suddenly she heard a scream.

While mother________ dinner the phone rang.

When boarding the plane, many passengers were annoyed because they ________ waiting in the airport for three ad a half hours.