When they saw their teacher into the classroom, they stopped at once.
| A．walk; to talk | B．walking; to talk |
| C．to walk; talking | D．walking; talking |
Millions of trees _____ around our city every year.
| A．are planting | B．were planted | C．planted | D．are planted |
She often _______ sweet music with me.
| A．shares | B．receives | C．makes | D．offers |
I feel Australian are similar _______ us in many ways.
| A．with | B．in | C．to | D．at |
More colleges students would like ________ in the west part of our country after they graduate.
| A．work | B．working | C．to work | D．will work |
We had an important exam ________ this month.
| A．at the end of | B．at the end | C．in the end of | D．in the end |