Only 16 percent of China’s area ____ covered with forests, so ____of us should protect trees.
| A．are; every | B．is; each | C．is; everyone | D．are; each |
Sarah’s uncle is ___ doctor, and her aunt is___ artist.
| A．a; an | B．a; a | C．an; an | D．an; a |
His parents ______ teachers.
| A．is | B．are | C．am | D．Be |
I’m ______, because today is my birthday.
| A．sad | B．happy | C．angry | D．afraid |
He ______ in the hospital.
| A．work | B．works |
| C．working | D．worker |
What does his sister ______?
| A．do | B．does | C．doing | D．Work |