Can or can't for possibility

We use "can" to say that...

• something is possible.

• something is not possible.

People ___ visit Machu Picchu every day.

• can

• can't

You ___ take sorojchi pills if you suffer altitude sickness.

• can't

• can

Tourist can ___ for information to the police or locals.

• ask

• tell

• say

• help

You can ___ with credit card in several places around the world.

• change

• get

• pay

• sell

We use "can't" to say that...

• something is possible.

• something is not possible.

Tourists ___ enter to the country without a passport.

• can

• can't

Agencies ___ offer tour packages only in the local language.

• can

• can't

Some locals can't ___ with tourists in English. It's good to learn the local language.

• say

• mention

• tell

• talk

Nobody can't ___ your bags without your permission at the airport.

• fly

• listen

• take

• admire