Lesson129. seventy miles an hour. 2009-10-28

Look,Gary! That policeman is waving to you. he wants you to stop. Where do you think you are? on a race track? you must have been driving at se ...

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Lesson 128. He can't be... He must be... 2009-10-25

he can't be ill. he must be tired. It can't be my new hat. It must be my old hat. she can't be Danish. she must be Swedish. he can ...

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Lesson 127 A famous actress 2009-10-25

Can you recognize that woman, Liz. I think I can,Kate. It must be Karen Marsh, the actress. I thought so. who is that beside her? That must ...

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lesson 126.have to and do not need to,不得不和不必要。 2009-10-25

do you have to go now? yes, I have to leave immediately. do you have to get up early tomorrow morning? yes, I'll have to get up at six o'clock. ...

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Lesson 125. tea for two. 2009-10-25

Can't you come in and have tea now,peter? Not yet. I must water the garden first. Do you have to water it now? I am afraid I must, look at i ...

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Lesson one hundred and twenty- four.who/whom,which, that. 2009-10-23

who served you? the man standing behind the counter. the man who is standing behind the counter. who served you? the woman standing behind the cou ...

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