His younger sister may already be in high school now, in ___ case this picture book is too childish for her.
—It’s hard to believe that Jack ________ have fought with the policeman. —Yes.If one ________ ask for trouble, it can’t be helped.
If our car had not ________, we would have been here on time.
This new kind of chemicals will help keep the air, soil and water________ from pollution.
Barack Obama has taken personal blame ________ the security failures which led ________ the attempt to blow up a plane on Christmas Day.
―Look! What a mistake! Why? ―Sorry, I _________ on it.