Бие даалтын гэрийн даалгавар4a. Study the present perfect continuoussentences in activity 3c.Then choose a or b inthe expl...
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Dasgal

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Dasgal

  1. 1. Бие даалтын гэрийн даалгавар4a. Study the present perfect continuoussentences in activity 3c.Then choose a or b inthe explanations below.1.We use present prefect continuous foractivities thata. started in the past and were completed.b. started in the past and haven’t beencompleted.2. We use since beforea. an exact point in time.b. a period of time3. We use for before a. an exact point in time.b. a period of time4.To from the present prefect continuous weusea. have/has + verb –ingb. have/has been+ verb –ing

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