When I talked with my grandma on the phone, she sounded weak, but by the time we ___ up, her voice had been full of life.
The children,________ had played the whole day long,were worn out.
Finally he reached a lonely island ________ was completely cut off from the outside world.
There is no simple answer,________ is often the case in science.
John invited about 40 people to his wedding,most of________are family members.
We have launched another manmade satellite, ________is announced in today’s newspaper.