Areas of charged particles

A movie from long ago could last only minutes.
What is the subject?

Tell everyone whose time is up to please move on to the next booth.

Three buses arrived, but Carlos wasn't on any of them.

Don't use the designs that Joonie suggested, for your own are much better.

Thunder follows lightening

Edison's helpers called the studio the Black Maria.
What is the subject?

It is important to learn to cook, so listen to your mom's recipes.

Whenever Johnnie shows up, the dog goes crazy.

What is the long, leafy branches swayed gracefully with the breeze.

They ran for cover.

Robins either find worms in the grass or dig for them underground.
What is the predicate?

The car that my sister wants to buy has many extras.

I simply can't keep up with Elizabeth.

The baby stays with his grandmother while his mother is at work.

Even though we invited her again.

Graham crackers, marshmallows, and chocolate taste delicious together.
What is the subject?

The boy whom we met at the zoo is from Germany.

It is true that time is priceless, and so, whatever you do, don't waste it.

If you call the accounting office on Monday, I'm sure they could help you.

Where you go to college is your decision.

Lead the way to the museum.

As long as you're driving that way, could you stop at the post office for me?

Clark's the only person I know who wears a tam-o'-shanter.

Greg likes tennis and his sister likes golf.