—This returned Chinese scholar has become one of the top experts in this field .
—Yes , I know him very well . He in Africa with wild animals for eight years .
| A．has worked | B．had worked | C．worked | D．has been working |
— Joe, don’t forget to bring your laptop with you tomorrow, OK?
— Oh, thank you. I wouldn’t bring it if you _____ me.
| A．wouldn’t remind | B．haven’t reminded |
| C．hadn’t reminded | D．shouldn’t have reminded |
The painting______to someone who later donated it to the college.
| A．had sold | B．was sold | C．will sell | D．is sold |
I suggest you delete the useless files on the computer which _______ too much space.
| A．give away | B．make up | C．set aside | D．take up |
At first I regretted _____ them to stay, but we soon became great friends.
| A．to invite | B．invited | C．to have invited | D．inviting |
Most of my friends shop at the stores _____ the goods are very cheap.
| A．which | B．where | C．whose | D．Why |