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listening; listen listening to; hear hearing; hear hearing; listen
Yes，you can Of course No problem No，you can't
are listening listen listened have listened
may, mustn’t must, can’t can, can’t mustn’t, can
listened listen are listening have listened
may, mustn’t must, can’t can, can’t mustn’t, can
Yes, we do Yes, we can No, we don't No, we can
Yes, we do No, we don't No, you can't Yes, we can
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