----May I have a look at the I-phone,sir
-----Which one?_________black one?
| A．A | B． An | C．The | D．不填 |
Which is of the two boys?
| A．the tallest | B．the taller | C．taller | D．tall |
There were __________ animals in the forest many years ago.
| A．thousand of | B．thousands of |
| C．three thousand of | D．three thousands of |
Water is very important all living things. We must ______ every drop of water.
| A．for; leave | B．for; keep | C．to; save | D．to; show |
— What are you doing?
— I’m life in the countryside.
| A．think over | B．thinking over | C．think about | D．thinking about |
I feel tired, but I don’t want to stop _______.
| A．work | B．to work | C．works | D．working |