(1)As is predicted by scientists,global pollution has become on of the most serious problem humans are faced with.
(2) Competition for these jobs is very tough,we have five times as we did last year/there are five times as many applicants this year as there were last year.
(3)As it is, education program should fit into national economic development plan.
(4)The car burns too much gas,and moreover ,the price is almost twice as much as I intend to pay.
(5)We should consider its history and political background at first when want to know a major international event.