We used to see each other ____ but haven't heard from him since last year.(2012 .辽宁)
| A．especially |
| B．regularly |
| C．particularly |
| D．approximately |
The country has already sent up three unmanned spacecraft，the most recent ________ at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
________tomorrow’s lessons，I have no time to play with you.
| A．Not preparing | B．Not prepared |
| C．Not having prepared | D．Having not prepared |
—I would like to buy an expensive camera.
—Well.We have several models________.
| A．to choose from | B．of choice |
| C．to be chosen | D．for choosing |
The little boy still needs the________20 dollars to do with some things________.
| A．remaining；remained to be settled |
| B．remaining；remaining to be settled |
| C．remained；remained to settle |
| D．remained；remaining to settle |
________the working efficiency，the boss allows the employees to have a coffee break.
| A．Improving | B．To improve |
| C．Having improved | D．Improved |