If they do not give us a treat, we can play a trick ________ them.
| A．at | B．on | C．for | D．to |
.
---May I go with my friends to the harvest festival ?
--- _______
| A．Yes, you may not. | B．No, you may. | C．No, you mustn’t. | D．Yes. you must. |
.
Do you often shop in our store? How much do you ______ spend every time?
| A．approximately | B．properly | C．immediately | D．probably |
.
---Will you give up the plan?
---No. No matter what result is, I’ll still ______ to do it.
| A．manage | B．try | C．allow | D．encourage |
.
We will learn how to operate the machine _______.
| A．at a time | B．at one time | C．at the time | D．in time |
.
We need to strike a ______ between the needs of the country and the rights of the individual(个人).
| A．silence | B．difference | C．balance | D．weakness |