根据句意及括号内所给词的适当形式填空。
These are            （pen）.
         （be）those your parents?
This is            （she）gold ring.
Here are two         （photo）of my family.
Those         （child）boats are on the river.
Mr Li        （have）a new car now.
        （who）baseball is that?
Are these your keys? No,          （it）aren’t.
Is this            （you）son?
What colour are the        （watch）?