Follow up
Andy and I
are bestfriends since gradeschool.--> I believe this is correct.
Andy and I
is upset.
Janice and Shiela
is fighting almost everyday.
Janice and Shiela
are fighting almost everyday.
I heard her sang once.
I heard her
sing once.
For me, she's the best teacher.
To me, she's the best teacher.
Please explain why some of the sentences are wrong.
Thanks! :)