1. I have a friend who goes biking many times.

2. I have a friend who goes hunting every weekend.

3. I have a friend who got the first prize in the speech contest.

4. I have a friend who is the first in grades his class.

5. I have a friend who is very good at baseball.

6. I have a friend who is very pretty.

7. I have a friend who has ever been to Japan.

(Would you like to check the sentences? Are they correct and common?)

7. I have a friend who has been to Japan. OR I have a friend who has never been to Japan.

Sra

Yes, the sentences you provided are grammatically correct and common in usage. However, there are a few minor adjustments you can make to improve clarity:

1. I have a friend who goes biking often.
2. I have a friend who goes hunting every weekend.
3. I have a friend who won first prize in a speech contest.
4. I have a friend who is at the top of his class in grades.
5. I have a friend who is very skilled in baseball.
6. I have a friend who is very beautiful.
7. I have a friend who has been to Japan before.

These revisions make the sentences clearer and more natural-sounding.

They are not correct,they are starting with 'i',every single sentence.