Какое слово пропущено? This girl... my sister. Tom ... in bed. Ann... ready. The pupil...very clever. The duck... yellow.

This girl is my sister. Tom is in bed. Ann is ready. The pupil is very clever. The duck is yellow. Here it is. It is a long pencil. I am here. I am at home. I am eight. They are pupils. My sisters are pupils. I  am tired. Olya and I are tired. The girls are tired. The houses is old. It is a long pencil. I am here. I am eight. We are at school. My sister and I are pupils. My sisters are pupils. I am tired.Olya and I  are tired. My sister and I are tired.