As we know, ________is good exercise and it is necessary for health.
| A．walk | B．to walk |
| C．walking | D．walked |
_________the door, please. -Come in, please. The door_______.
| A．Be open, opens | B．Be open, is opening |
| C．Open, is open | D．Open, opens |
__________late for school again?
| A．does he be | B．Are he | C．Does he | D．Is he |
She doesn't take a bus_______ home, but she takes a bus_______ school.
| A．to,／ | B．for,／ | C．into, to | D．／,to |
I have_______ e-dog._______ name is Hobo.
| A．a, It's | B．an, Its | C．an, It's | D．a, It's |
-Don't stand_______ me. I can't see the blackboard. -I'm sorry.
| A．next | B．behind |
| C．in the front of | D．in front of |