Готово — письмо с вставленными словами:
Dear Alice,
I am Betty. This is my father and this is my mother. Their names are Bob and Sarah. Jeff and Tom are my brothers. Jeff is my big brother and Tom is my little brother. I have got a grandfather and a grandmother. They are very nice. We are a happy family. Love, Betty
Вставки (номер — слово):
$1$ am
$2$ is
$3$ is
$4$ are
$5$ are
$6$ is
$7$ is
$8$ have
$9$ are
$10$ are