用括号内所给词的适当形式填空!Thank you very much

问题描述:

用括号内所给词的适当形式填空!Thank you very much
A set of _(key) is in the lost and foun case.
This is _(I) notebook.
Jim is his _(one) name.
Nice to meet _(your).
What _(be) three and four?

keys
my
first
you
is