____ twice, the postman refused to deliver our letters unless we changed our dog.
| A．Being bitten | B．Bitten |
| C．Having bitten | D．To be bitten |
As is known to all language learners, the newly learnt words will soon be forgotten unless ______ used in everyday communication.
| A．gradually | B．loosely |
| C．exactly | D．frequently |
Since you have missed such a good chance, don’t think about it any more. It’s ______ crying over spilt milk.
| A．useless | B．important |
| C．reasonable | D．necessary |
The proverb “Seeing a thing for oneself is better than hearing about it” means that secondhand experience is less ______ than firsthand experience, which is perfectly true.
| A．available | B．reasonable |
| C．reliable | D．unbelievable |
I ______ an old photo from the drawer yesterday, which reminded me of the days we spend together on the farm.
| A．dug up | B．give up |
| C．come up | D．look up |
We ______ our tent and began to sleep in it, but I really couldn’t put up with the heat in the tent.
| A．put on | B．put away |
| C．put up | D．put down |