John has tried many ways to solve the physics problems, but _______ works.
____ was in 1979 _____ I graduated from the university.
It is no use ________ him to give up smoking.He won’t listen!
A number of students trees every year and the number of them increasing.
- the football match? -Class Three.
Please ________ the numbers and I’m sure they will ________ more than 1,000.