Explanation

Ate and eaten are two forms of the irregular verb eat.

1. Ate is the past tense form and
2. eaten is the past participle form.
   

Additional Info

The third-person singular simple present indicative form of "eat" is "eats".

The present participle of "eat" is "eating".

The past participle of " eat" is "eaten".

Explanation

Explanation

Present perfect tense = have/has + past participle

"You" takes "have", and "made" is the past participle of "make"

So, the correct sentence is: You have made beautiful painting.

Explanation

This sentence is a third conditional sentence, which talks about unreal past situations — things that did not happen.

- Structure of third conditional:  

  If + past perfect, would have + past participle

- "Had worked" is the past perfect form, which fits the structure perfectly:  

  If you had worked hard, you would have passed.

Explanation

They are doing their homework.

• The verb are tells us this is the present continuous tense.

• Structure of present continuous = Subject + be (am/is/are) + verb-ing.

• So we need the -ing form → doing.

Explanation

Explanation

They work hard all day.

Explanation

The subject "The book" is singular, so it takes the singular past passive form:  

"was written"

Explanation

Explanation

The leaves had turned brown.

Past Perfect tense uses had + past participle to show an action completed before another past action or time.

Here, had turned is in Past Perfect tense.