Don't you think it is time you _____ smokingA gave up B giving up C have given up D to give upwhy Michelle knows litle of physics,_____ of chemistry.A as well as B no less than C and still little D and still lesswhy

Don't you think it is time you _____ smokingA gave up B giving up C have given up D to give upwhy Michelle knows litle of physics,_____ of chemistry.A as well as B no less than C and still little D and still lesswhy
Don't you think it is time you _____ smoking
A gave up B giving up C have given up D to give up
why
Michelle knows litle of physics,_____ of chemistry.
A as well as B no less than C and still little D and still less
why

Don't you think it is time you _____ smokingA gave up B giving up C have given up D to give upwhy Michelle knows litle of physics,_____ of chemistry.A as well as B no less than C and still little D and still lesswhy
1 虚拟语气的一种
it is time that you should do sth
it is time you did sth
it was time youhad done sth
2 比较级的一种 still有“更”的意思 后接比较级形式
Michelle 懂很少物理,更少化学

1. It is time +主句 （谓语用过去时）
2. 前面有little,后句就用less