Dùng bốn chữ số 0, 1, 2, 9, có thể lập được bao nhiêu số nhỏ hơn 2019, chiahết cho 3, và trong mỗi số đó, mỗi chữ số chỉ có mặt tối đa một lần. là những số nào

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III- Write what they are doing at the moment: 1- Nam watch the soccer match on TV 2- Hoa play tennis with her father. 3- Lan stay at home and study the lesson 4- Ba and Tu go to the golf club . 5- My brother go out with his friends. 6- My mother do the housework. 7- The boys play marbles with friends 8- Kien rehearse a play Ex: 1- Nam is watching the soccer match onTV at the moment. 2.………………………………………………………………… 3…………………………………………………………………. 4………………………………………………………………..… 5…………………………………………………………………. 6………………………………………………………………… 7………………………………………………………………… 8…………………………………………………………………. VI-Fill in the gap with nouns of subjects: Physics Biology Geography Computer science History Art Electronics Literature 1-In …………………..we study different countries and people. 2-In……………… we learn about books, poems and write essays 3-In ………………………….we learn how to use a computer. 4-In ……………....we study many thing and do some experiments 5-In …………………we study past and present events in Vietnam and in the world. 6-In ………………....we learn how to repair household appliances 7-In ………………………. we like plants and animals. 8-In ……………………….. we study draw a picture.