At present, 1 in every 10 people is aged 60 years or older, ______ in 2050, 1 in every 5 people will be aged 60 years or older.
Peter has many friends;_________can help him.
It was in the mid-1980s that cartoons began to take off in China,_________there were only pictured-story books.
He likes to use words _________ is clear to her.
A terrible earthquake happened in that district at the end of 2004, ____ many countries in the world paid close attention to this.
The president stood by a window inside the room, ____, looking over the square.