The medicine has begun to ___
| A．have its work | B．take its work | C．do its work | D．show its work |
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 |
Weclimbedhigher_____wemightseethescenesbetter.
| A．sothat | B．even though |
| C．in case | D．as if |
According to the factory safety rules, all accidents _____ be reported to the safety officer.
| A．may | B．can |
| C．would | D．shall |