Singular or plural? (Intermediate)

This pair of sunglasses ______ (be) really expensive. I'm not paying that much!

• are

• is

These scissors ______ (be) blunt. Get me another pair.

• is

• are

That jacket you're wearing is really nice but those green jeans (be) horrible.

• is

• are

Physics _______ (be) the study of the natural world.

• is

• are

A lot of the news we hear on the TV ______ (be) bad. It's so depressing.

• is

• are

The police _____ (investigate) a break-in at the National Bank last night.

• is investigating

• are investigating

People ______ (be) are always likely to tell lies to protect themselves.

• is

• are

Think carefully before you spend that amount of money. A thousand pounds ______ (be) a lot!

• is

• are

You should try walking so far just to find an open supermarket! Three miles _____ (tire) you out so quickly, I'm telling you!

• tire

• tires

They have exaggerated a little with that new swimming pool. Did you see the temperature of the water? Forty one degrees ______ (be) too high!

• is

• are