My brother is a hardworking student that he always gets high marks.
____ the government’s efforts, our life is becoming better and better.
When his mother came into his room, he pretended ______
Would you mind __ me how ___ the chemistry problem?
He is so careless that he often _______his school things at home.
--- Was Tom a member of Greener China?---Yes, he has ___ Greener China for 5 years.