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现在进行时造句-含一个单三<br/

现在进行时造句-含一个单三<br/

含一个单三急!急!急!急!急!急!急!

1 Listen, the bird is singing.2 The teacher is giving us a lesson at the moment/present.3 Are you playing family computer games?4 He isn't having dinner now.5 They are walking and talking.