A great deal has been done to
举一反三
- A great deal has been done to A: maintain B: improve C: assess D: protect
- A great deal has been done to better the situation.() A: change B: improve C: assess D: harm
- A great deal has been done to remedy the situation．（） A: maintain B: improve C: assess D: protect
- A great deal has been done to remedy the situation. A: maintain B: improve C: preserve D: D. protect
- Only recently_________ to deal with the environmental problems. A: something has done B: has something done C: has something been done D: something has been done