(2012·南京高二检测) Some people are worrying about the possibility _______ mobile phones could be responsible for a range of illnesses, from rashes (皮疹) to brain tumors.
I don’t know the reason _________ he’s come so late.
There is no such place_________you dream of in all this world.
Government reports,legal papers and most business letters are the main situations________English is used.
I shall never forget the day _________Shen Zhou V was launched,_________has a great effect on my life.
The humans are destroying nature day by day,__________of course,will cause severe punishment from it sooner or later.