my english improved a lot,as i used english

my english improved a lot,as i used english I should have my english grammar improved 能不能说my english has improved a lot 就是说improve一般用不用被动语态? 'my english has been improved' or 'my english has improved', with our english teacher's help ,i have improved my english. With our English teacher's help,I have improved my English.( With our English tecaher,s help I have improved.My English（改 4.They used to be,but the city has improved a lot since I ca ____ the help of my classmates,I've improved my English In this way I have improved my English In this way my Englis from sentences:1 spoken English ,I think ,my ,is improved ,g with time went by,i found that my english is improved.这句怎么改错