On 26th December,2004,a young girl called Tilly Smith was on holiday with her family in Phuket,Thailand.No one__21__what was about to happen -a tsunami(海嘯)that would kill about 200,000 people Tilly had studied tsunami in her__22__class and had seen video of tsunami.
　　"My mum __23__ realize what was happening," said Tilly.But Tilly did.“__24__ saw this bubbling(冒泡).on the water which looked as if it was being heated up,and was making a __25__noise.The water was coming in,but it wasn't going out__ 26__.It was coming in,and in.towards the hotel."
　　She__27__to her mother and sister and told them that it was a tsunami.__28__ they did not believe her.She was only 10 years Old.Maybe she was just hoping to see tsunami __29__she had studied it?
　　Tilly's father went back to the hotel__30__ her sister.They told the people who worked in the hotel what Tilly had said.Tilly ran out to the beach,to warn the people__3l__.The hotel workers believed Tilly.They began to get people off the beach.__32__a few minutes later,a huge wave swept over the beach.The beach was__33__ of the few beaches in Phuket where no one was__34__ or seriously hurt.This was all because of 10-year-old Tilly Smith.She and all her__35__ escaped(撤離).
　　2l.A.forgot B.thought C.found D.knew
　　22.A.physics B.History C.geography D.chemistry
　　23.A.won 't B.didn't C.doesn't D.wouldn't
　　24.A.I B.They C.You D.She
　　25.A.good B.common C.strange D.peaceful
　　26.Amore B.again C.then D.soon
　　27.A.turned B.came C.went D.ran
　　28.A.At once B.At last C.In fact D.At first
　　29.A.before B.when C.though D.because
　　30.A.from B.for C.with D.of
　　31.A.there B inside C.here D.outside
　　32.A.Next B.Only C.After D.Quite
　　33.A.one B.all C.some D.none
　　34.A.left B.saved C.discovered D.killed
　　35.A.group B.friends C.family D.team