She works in school and keeps students silent.

• librarian

• lifeguard

• principal

We always see this on streets. It has a green, red, and yellow colors.

• polite

• traffic lights

• lifeguard

He watches over the people in the pool.

• lifeguard

• polite

• crossing guard

They help pedestrians cross the streets safely.

• polite

• crossing guard

• lifeguard

He helps the girl to sit down.

• clean up

• polite

• litter

When we c_te_or_ze, we put things that are similar into groups.

Whose pencil is this? It's _______.

• they

• mine

• you

This bag is Jenny's. It's __________.

• him

• hers

• they

_______ paper and pen is this?

• Whose

• Whom

• Who

Who owns this wallet? That is _______.

• you

• mine

• your