Are the underlined parts of the 1. Here's some news! Ben's closed his store.__Ok 2 I don't have my pendrive right now.___ I've lent it to Andre. 3. Where has Rachel gone to school as a child?__ 4. Who has made the first TV?__ 5. Corruption has become a big issue in Brai.__ 6. His math book isn't ___7. great grandfather has worked in a paper mill. __8. The internet has gone down so I can't send emails __9. Elvis has been the singer who has soldthe most albums.​

1. "Ben's closed his store" - The underlined part is grammatically correct. It is a sentence stating that Ben has closed his store.

2. "I don't have my pendrive right now" - The underlined part is grammatically correct. It is a sentence stating that the speaker doesn't have their pendrive at the moment.

3. "Where has Rachel gone to school as a child?" - The underlined part is grammatically correct. It is a question asking about Rachel's past school experience.

4. "Who has made the first TV?" - The underlined part is grammatically correct. It is a question asking about the creator of the first television.

5. "Corruption has become a big issue in Brai" - The underlined part contains an error. "Brai" is likely a typo or misspelling. The correct word should be specified to accurately identify the location in question. For example, if the intended location is Brazil, it should be written as "Brazil."

6. "His math book isn't" - The underlined part contains an error. It is an incomplete sentence and does not make sense on its own. It should be followed by a noun or an adjective to complete the thought.

7. "great grandfather has worked in a paper mill" - The underlined part is grammatically correct. It is a sentence stating that someone's great grandfather worked in a paper mill.

8. "The internet has gone down so I can't send emails" - The underlined part is grammatically correct. It is a sentence stating that the internet is not working, resulting in the speaker's inability to send emails.

9. "Elvis has been the singer who has sold the most albums" - The underlined part is grammatically correct. It is a sentence stating that Elvis has been the singer with the highest album sales.