Explanation

 "He and I went to the store."

When pronouns are connected in series, they should have the same case.

They could all be in the subject case (e.g., "he and I"), object case ("him and me"), or possessive case ("his and my")

Explanation

correct punctuation: She said, " I Love you," and then hung up

because Commas are used to set off the  "she said" clause. 

and "," used after sentence completion, "she said," and " I love you,"

Explanation

grammatically correct: John and I are going to the party

” Using “I” is perfectly correct here, as John and I are the people who “are going to party”

Explanation

Correct usage would be "He and I went to the store."

When pronouns are connected in series, they should have the same case.

They could all be in the subject case (e.g., "he and I"), object case ("him and me"), or possessive case ("his and my")

Explanation

certain pollens are more likely to cause an allergic reaction than others is a correct sentence

because "pollens and others" are plural 

Explanation

write a paragraph on 'Good Manner' in your notebook is the correct sentence 

because inverted commas go before and after direct speech

Other words like dairy, copy, and noting book, are not appropriate words to define an academic book.

Explanation

after the picnic, we had lots of bread left

پکنک کے بعد، ہمارے پاس بہت سی روٹی رہ گئی تھی۔

sentence to be grammatically correct, because the subject and verb both are plural.

Explanation

she is studying for her exams

Explanation

“I'm doing great” is the correct phrase.

This is an idiom (fixed phrase) that English speakers often use in casual speech.

It means the same thing as “I'm doing well,” which sounds more formal.

Explanation

I want to go home. is the correct sentence