Present passive. Страдательный залог в настоящем времени

BE + V3
am
is + V3
are
am
is + V3
are
am
is + V3
are

BE + not + V3
am
is + not + V3
are

BE +(кто?) + V3 ?
am
is + (кто?) V3 ?
are

The house is built.
Дом строят.

The birds are fed.
Птиц кормят.

(+) The house is built.
(-) The house is not built.
(?) Is the house built?
(+) The birds are fed.
(-) The birds are not fed.
(?) Are the birds fed?