Peter won't drive us to the station. He has___________ to take us all.
Our manager ________ for Shanghai in a few days and he has asked me to find out when the earliest plane ________ next Wednesday.
Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.
The sleeping baby would be scared _______ a sudden loud noise.
--David, are you 1istening to me?---Sorry, Dad. I _______ to make sense of what the reporter said.
Many approaches have been _______ to control the spread of H7N9 Bird Flu.