Present perfect simple and countinuous. Read the tip. Then Read the sentences. Are they correct or incorrect.
Evan can't build the model because he hasn't been understanding
the instructions,
correct or
incorrect
2 I've written two boems this month. They are short but it was a lot of work.
correct or
incorrect
3 Francine has been looking online for a rare comic book that is missing in her collection, but she can't find it anywhere.
correct or
incorrect
4 These hiking shoes smell terrible! It's because I've been walking in the woods all week and wearing them every day.
5. Ok, everyone, the dance class has been finishing. Thank you for coming today.
correct or incorrect
6. Grandpa has been cooking in the kitchen all day. I don't know what it is, but it smells delicious
correct or incorrect.
7. I've only been talking to my ski instructor twic, but I really like him. I think we're going to be friends.
correct or incorrect.
8. Angela has painted her bedroom again. It's now all black and white. It looks great.
correct or incorrect.

1. Evan can't build the model because he hasn't been understanding the instructions. - incorrect

2. I've written two poems this month. They are short but it was a lot of work. - correct

3. Francine has been looking online for a rare comic book that is missing in her collection, but she can't find it anywhere.  - correct

4. These hiking shoes smell terrible! It's because I've been walking in the woods all week and wearing them every day.  - correct

5. Ok, everyone, the dance class has been finishing. Thank you for coming today. - incorrect

6. Grandpa has been cooking in the kitchen all day. I don't know what it is, but it smells delicious. - correct

7. I've only been talking to my ski instructor twice, but I really like him. I think we're going to be friends.  - incorrect

8. Angela has painted her bedroom again. It's now all black and white. It looks great.  - correct

Explanation:

The present perfect simple and the present perfect continuous are tenses we use when we want to talk about past actions or states that are still connected to the present.

The present perfect simple tells us that an action expressed by the verb is still going on or has recently stopped and that it still has an influence on the present. It's built like this: have/has + past participle.

The present perfect continuous tells us that an action started in the past and that it's still continuing in the present. It's built like this: has/have + been + present participle.

You can see more about how these tenses are used in the images below:

either a donut or a sphere or a pancake or a flat sphere. it depends on where the vertical line is.

if the line goes through the center of the circle and is perpendicular to a diameter containing the center, then you get a flat circle.

if the line and the diameter of a the circle meet in the center of the diameter and at an angle, you get a pancake.

if the line is on the circumference of the circle and is at right angles   to the circle you get a ring.

if the line contains the diameter, you get a sphere.

the the line is parallel to the diameter and touches the circumference, you get a donut.