The park looks quiet and clean；we enjoy ________ for a walk．
| A．go |
| B．goes |
| C．to go |
| D．going |
So I rudely replied, “You’ve dialed the wrong number! ” and then ________.
| A．hanged up | B．hung up | C．held on | D．held up |
His English ________ a lot since he took the course.
| A．improved | B．was improved | C．has improved | D．has been improved |
We will give you a good price ________ you are thinking of buying it.
| A．until | B．and | C．so that | D．if |
I become ________ in American history.
| A．more interested and more interested | B．more and more interested |
| C．more interesting and more interesting | D．more and more interesting |
She often sends ________ to me on her mobile phone.
| A．information | B．messages | C．news | D．suggestion |