My____ (sister) bike is very expensive.

A) sisters'

B) sister’s

C) sisters

D) sister

The____(boys) singing classes have been postponed.

A) boy

B) boys

C) boy’s

D) boys'

Adam visited a dentist to get his____ (teeth) cavities filled.

A) teeth

B) teeths

C) teeth’s

D) teeths'

I borrowed____ (Chris) shoes for running.

A) Chris’s

B) Chris

C) Chris'

D) Chriss'

The____ (students) uniforms are elegant and tidy.

A) students

B) students'

C) student’s

D) student