1)As is predicted by sciencists,global pollution has become one of the most serious problems,which humans are faced with.
2)Competiton for these job is very tough--we have five times as many applicants this year as we did last year.
3)As the facts reveal,educational programs need to fit into the national plan for economic development.
4)This car burns too much gas,and moreover,the price is almost twice as much as I intend to pay.
5)In order to understand a great international event,we initially need to consider the historical and political background to it.
