When the dog attacked me, I _________ myself with a stick.
Walter offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.
The job proved to be much more difficult than I______.
It was 300 hundred years ago _______ this historic temple was built by a wealthy Mandarin.
The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can __ _ all foods are secure to us, but we are sure that the situation is turning for the better.
Going on a trip into ______ space must be quite ______ exciting experience.