Can and Could Quiz

What is the basic function of "can" in a sentence?Choose the correct answer:

To express ability in the past
To express ability or possibility in the present or future
To make a formal request
To suggest a hypothetical situation

Which sentence correctly uses "can" to express physical ability?Choose the correct answer:

I could swim across the lake last year.
He can lift heavy weights.
She could see the stars last night.
They could play the piano when they were children.

How is "could" commonly used in requests?Choose the correct answer:

To ask for permission formally
To make a direct offer
To make a polite request
To express a general ability

When expressing possibility, how does the use of "can" differ from "could"?Choose the correct answer:

"Can" indicates a higher degree of likelihood than "could."
"Could" is used for definite possibilities.
"Can" is used exclusively for negative possibilities.
There is no difference in usage.

"When I was younger, I _____ run a mile in under six minutes." Which word correctly fills in the blank to indicate past ability?Choose the correct answer:

can
could
will
would

Which of the following examples uses "can" to correctly indicate permission?Choose the correct answer:

Can I leave early today?
Can you help please me with this?
Can it done by tomorrow?
All of the above

"If I had more time, I _____ learn to play the piano." Which modal verb correctly completes this sentence to express a conditional ability?Choose the correct answer:

can
could
may
might

How is "can" used in the context of giving advice?Choose the correct answer:

To offer a polite suggestion
To give a direct and strong recommendation
To formally command someone to do something
To express a personal preference

Choose the sentence that correctly uses "could" to suggest an alternative.Choose the correct answer:

You could try calling customer service for help.
You can surely win this game.
I can go to the store for you.
They can see us from there.

How should negative sentences be formed with "can" and "could"?Choose the correct answer:

By adding "not" after the modal verb
By adding "no" before the modal verb
By inverting the modal verb and subject
By using "never" instead of the modal verb