If it ________ for the heavy rain then, we would have arrived here ahead of time.
Most scientists agree that global warming is___serious that all of us should pay attention to it all the time
John may phone tonight.I don’t want to go out___he phones
The famous scientist grew up___he was born and in 1930 he came to Shanghai
The old man asked Lucy to move to another chair___he wanted to sit next to his wife
It was April 29,2011___ Prince William and Kate Middleton walked into the palace hall of the wedding ceremony