You can take anything from the shelf and read, but please________the books when you've finished with them.
| A．put on |
| B．put down |
| C．put back |
| D．put off |
It is a good plan in theory, but it _____ to be seen whether it works in practice.
| A．keeps | B．stays | C．stands | D．remains |
This piece of furniture is really inexpensive with a price of _____ forty dollars.
| A．less than | B．more than | C．other than | D．rather than |
—Did you visit the museum today?
—No. We _____ it, but we spent too much time shopping.
| A．could have visited | B．must have visited | C．could visit | D．must visit |
Oh, boy, why are you killing your time this way? Can’t you find something _____ doing?
| A．useful | B．worthy | C．valuable | D．worth |
I am going to do all I can _____ the bad impression you have of me.
| A．to remove | B．remove | C．to leave | D．leave |