the book / is / interesting ? Yes, ...
Is the book interesting? Yes, it is.
a teacher / is / she ? No,
Is she a teacher? No, she isn't.
study / hard / is? Yes \ No
Is study hard? Yes, it is. No, it isn't.
mouse / is / it ? Yes, ...
Is it a mouse? Yes, it is.
it / a raccoon / is ? Yes, ....
Is it a raccoon. Yes, it is.
they / friends / are ? No, ...
Are they friends? No, they aren't.
he / is /a student ? No, ...
Is he a student? No, he isn't.
the weather / is / fine? No, ...
Is the weather fine? No, it isn't.
he / strong / is ? No, ....
Is he strong? No, he isn't.
Are / friends / they ? Yes, ...
Are they friends? Yes, they are.
at home / she / is ? Yes, ....
Is she at home? Yes, she is.
at school / she / is? No, ...
Is she at school ? No, she is not.
she / Alice / is ? Yes, ....
Is she Alice? Yes, she is.