Please help me! thanks. change the sentence from plural to single! > they're good pizzas> it's a good pizza. 1) are the hamburger nice? 2) they're our pens? 3) where are the new computer? 4) they aren't very good books 5) they're rich countries. 6) they're my cats change the sentences from singular to plural> . ex. he's with his friend > they're with their friends. 1) she's from new york. 2) is it a good book? 3)it's a nice sandwich. 4) where's the bus? 5)this is a fantastic ice-cream! 6) he's my best friend