By 2050,there will be 9.1 billion people.
By 2050,there will be 9.1 billion people.
by two thousand twenty,a billion and a half people will live
people say that by the year 2010,( ) may be seven billion.
People say that by the year 2010,10 may be seven billion.什么意
people say that ____ the year 2010,it will be 7 billion.
there will be more a_______ people than young people
If there are [ ]people driving, there will be [ ] air pollut
-if there are()people driving,there will be()are pollution.-
1.there will be fewer people 2.there will be less free time
同义句转换There will be more people.There will be less free time.
There are 1.3 billion people in China(1.3 billion划线)划线提问
Today there are 6 billion people on the earth.