Fill in: is, are, then answer the qurstions: a pen? yes 12 years old? no, and nick in gade 5? new to the school? at secondary school?

Is, it is
are, i am not 
are, we are
is, she is
is, she is not

Is it a pen    yes it is
are you 12 years old        no i am not
is you and Nick in Gade 5?  yes?we are/
is laura new to the school yes she are/
is laura at secondary school    no she is not