Q: Does "sale" have the same meaning in the following two sentences?

You'll find vitamin C for sale at most pharmacies.

The new line of cars will soon be on sale.

OPTIONS:
- different meanings
- the same meaning

A: the same meaning

Q: Does "work" have the same meaning in the following two sentences?

He could not work the math problem.

This unpleasant situation isn't going to work itself out.

OPTIONS:
- different meanings
- the same meaning

A: the same meaning

Q: Does "difficulty" have the same meaning in the following two sentences?

They agreed about the difficulty of the climb.

Finished the test only with great difficulty.

OPTIONS:
- different meanings
- the same meaning

A:
different meanings