24．You arrive at 7:00 am.but you arrived at 7:30 am last Saturday.Don't be late next time．A．was supposed to B．is supposed toC．are supposed to D．were supposed to 【查看更多】

 

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You ________ arrive at 7:00 am，but you arrived at 7:30 am last Saturday，Don't be late next time．

A．was supposed to                         B．is supposed to

C．are supposed to                                 D．were supposed to

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