1.It is a fact that... （事實(shí)是...） you need air to survive2.It is honour that... （...非常榮幸）you give me this medal3.It is common knowledge... （...是常識(shí)）to lock the door when you go out4.It is natural that... (...很自然）he did what he did5.It is strange that... (奇怪的是...) human can fly6.It seems that... (似乎...) you have a bad day7.It happened that... (碰巧...) i run into you8.It appears that... (似乎...)the price of food is rising9.It is reported that... (據(jù)報(bào)道...) tsunami in Japan had cause billions of dollar in damage10.It has been proved that...(已證實(shí)...)man cannot give birth11.It is said that... (據(jù)說(shuō)...)human race had evlove from apes