初三英语用所给的适当形式填空,越快越好,1

初三英语用所给的适当形式填空,越快越好,1
1.I'd spent time _____(do) what I love_____(do).
2.The world we live ____(change)all the time.
3.We can produce electricity by ____(burn)garbage.
4.We have some difficulty _____(solve)the problem.
5.Mr.Li ____(teach)here for ten years.
6.If nobody___(litter),our world will be more beautiful
7.Working in strong ,____(change)light may do harm to your eyes.
8.There is the sign "No S___"on the wall.
9.He's be OK if do one small ___(operate)on him.