Still, yet, already;

 Here's a chart that shows the meanings of "still," "yet," and "already," and how they are used in sentences:

Adverb	Meaning	Use
still	indicates that the situation is continuing or has not changed	used in affirmative sentences with present perfect or present continuous tense
yet	indicates that the situation has not happened, but is expected to happen in the future	used in negative sentences and questions with present perfect or present perfect continuous tense
already	indicates that the situation has happened before the expected time or earlier than expected	used in affirmative sentences with present perfect or past simple tense

Examples:

1. "I have still not finished my homework." (The situation of not finishing the homework is continuing.)

2. "They are still waiting for the bus." (The situation of waiting for the bus is continuing.)

3. "Have you finished your work yet?" (The situation of finishing the work has not happened, but is expected to happen in the future.)

4. "He has not finished his meal yet." (The situation of finishing the meal has not happened, but is expected to happen in the future.)

5. "I have already eaten my breakfast." (The situation of eating breakfast happened before the expected time.)

6. "She has already left for the airport." (The situation of leaving for the airport happened earlier than expected.)

Note: The placement of these adverbs can vary depending on the sentence structure. Generally, "still" and "already" come before the main verb, while "yet" comes at the end of the sentence or question.

Here are some exercises to practice using "still," "yet," and "already" correctly:

1. _____________, I haven't finished my book report. (still, yet, already)

2. Have you _____________ booked your flight to Paris? (still, yet, already)

3. I can't believe it's 11am _____________! (still, yet, already)

4. They haven't _____________ decided on a location for the party. (still, yet, already)

5. We _____________ haven't seen the new movie that just came out. (still, yet, already)

Answers:

1. Still
2. Yet
3. Already
4. Yet
5. Still

Explanation:

1. "Still" is used to indicate that the action is continuing and has not yet been completed.

2. "Yet" is used to indicate that the action has not yet happened, but is expected to happen in the future.

3. "Already" is used to indicate that the action has happened before the expected time.

4. "Yet" is used to indicate that the decision has not yet been made, but is expected to happen in the future.

5. "Still" is used to indicate that the situation of not seeing the movie is continuing.