单选题
Let me tell you a story about Bert and Mildred Bumbridge, who used to be very【C1】______For example, Mildred would forget to cook dinner, or Bert would【C2】______up for work on Sunday thinking it was Monday. One summer they【C3】______to take a long plane trip. What do you suppose happened? Well, they got【C4】______the airport with only ten minutes to【C5】______So time was short. In that situation anyone would【C6】______the plane right away. But not Mr. and Mrs. Bumbridge. They just had to buy some flight insurance【C7】______All in all, who knows what will happen【C8】______a plane flight? They quickly put some coins into a machine and【C9】______came their insurance policy. " Who【C10】______get the money if we crash, I wonder?" asked Mildred. "My mother, of course," her husband【C11】______"We' 11 mail the policy to her. Now quickly give me a stamp,【C12】______you?" he said. "The plane' s going to take off in another minute. " Bert put the stamp on the envelope, dropped it in the mailbox, and【C13】______began to cry. What happened,【C14】______you suppose? He had mailed their【C15】______to his mother!