⑴It was short then.         A. They aren't young now.

⑵They weren't big then.    B. It is dirty now.

⑶It isn't clean now.         C. It wasn't tall then.

⑷They are old now.         D. They were small then.

They （were/weren't）dirty then.

They （are/aren't）clean now.

She （was/wasn't）fat then.

She （is/isn't）thin now.

⑴young 

⑵long 

⑶tall  

⑷thin 

⑸small

⑴Do you like apples?                    A. It's Amy.

⑵Is Tom at home?                       B. Yes, she does.

⑶Who's that?                            C. Yes, she is.

⑷Does Amy go to school on Mondays?    D. No, he isn't.

⑸Is Amy at home?                        E. Yes, I do.