She is a_______mother.
| A．forty year old | B．forty-years-old |
| C．forty years old | D．forty-year-old |
The boy ____ his homework after school every day.
| A．do | B．doing | C．does | D．is doing |
We’re looking forward to _____ your school.
| A．visit | B．visiting | C．looking | D．watching |
The children ____ to go sightseeing tomorrow.
| A．is going | B．are going | C．am going | D．go |
They’re going to play _____ table tennis.
| A．a | B．an | C．the | D．/ |
There are ____ students in our school.
| A．two thousands | B．two thousand | C．thousands of | D．thousand of |