Population is a bog s_____ problem
Population is a big s___ problem.
This is a s_____ problem.We must solve it
population problem is a great c to China
population is _____ big problem for eities .
填空The g of the population is a big problem in the world.
对括号内的内容提问Population is a problem because man,(in an increasi
Population is such a serious problem that we should take act
there is a bog shop near my home
How s_____ do you think the problem is?(terrible)
The b___ problem of the world is the interesting population
the large population problem is still serious in china
英语作文population problem