The rivers will become dirtier and dirtier________ we take action to protect them.
| A．since | B．if | C．until | D．unless |
The nice T-shirt must be________，because they both like wearing T-shirts．
| A．Mary and Linda’s |
| B．Mary’s and Linda’s |
| C．Mary or Linda’s |
| D．Mary’s or Linda’s |
My mother bought me a book________India．
| A．to |
| B．for |
| C．at |
| D．on |
I was terribly________about the children when they didn’t come home from school．
| A．worried |
| B．nervous |
| C．angry |
| D．happy |
The dictionary must be Fink’s，________?
| A．mustn’t it |
| B．must he |
| C．isn’t it |
| D．doesn’t he |
The nice hair band________Alice．
| A．must be |
| B．might belong to |
| C．may be |
| D．can belong |