1.could perform
2.couldn't use
3.couldn't cure
4.can clone
5.can't clone
6.will be able to operate
7.will be able to live
8.won't be able to live
1.could perform
2.couldn't use
3.couldn't cure
4.can clone
5.can't clone
6.will be able to operate
7.will be able to live
8.won't be able to live