It’s our duty _____
It's our duty to ____ _____ _______(保护环境)
It's our duty to make our city much_____
it's our duty to protect our environment/是什么意思请问
It ’s our duty to_________people_________too many trees. A.s
As a student ,it's our _____ to work hard.是填job呢还是填duty呢?
it's our duty to help ____(protect)the environment
1.It's our duty _______ the environment
it's our duty ti distribute to the society
it's our duty to_____(不要保护环境的)
it's our duty to fight___this kind of terrible disease.
it's my duty ...
I think it's our duty to keep our environment clean and tidy