(x+21) chia hết cho 7 và x là số tự nhiên nhỏ nhất

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Ex3: Reorder words. father /his / time / does / often / what / free / your / in / do ? don't / camping / we / have / because / tent / we / a / go / never. he's / tennis / sports / Phong / and / likes / table / Mr. / playing. park / a / goes / week / she / the / times / to / four. never/ walks/school /late/Nhung/she/always /is/to/and. friends / their / and / often /Trung / kites / how / do / his / fly ? walking / their / mountain / go / the / they / house / often / in / near. yard / doing / the / sister / aerobics / my / is / in. sports / play / the / which / he / weekends / does / on ? 10. their / listening / children / room / in / are / to / my / music. 11. small / thin / sister / white / and / his / lips / teeth / has. 12.lifter /heavy / so / is / and /he / a / strong / weight / very /he's. 13.Young's / round / Mrs. / or / is / oval / face ? 14.arms / fingers / the / are / ten / two / in / body / and / there. 15.hair / face / eyes / has / a / round / short / blue / black / Mr. Pike / and. EX4: Present or present progressive tense . 1. Where ___________you (live)____________?    I (live)______________in Hai Duong town. 2. What ___________he (do) ____________now?    He (water)___________flowers in the garden. 3. What _______________she (do)_____________?    She (be)______________a teacher. 4. Where _________________you (be) from? 5. At the moment, my sisters (play)______volleyball and my brother play)______________soccer. 6. it is 9.00; my family (watch)___________________TV. 7. In the summer, I usually (go)_______ to the park with my friends, and in the spring, we (have) _____Tet Holiday; I (be)________happy because I always (visit) ______________my granparents. 8. ____________your father (go)_____________to work by bus? 9. How ___________your sister (go)___________to school? 10. What time _____________they (get up)_________________? 11. What ____________they (do)________________in the winter? 12. Today, we (have)______________English class. 13. Her favourite subject (be)__________________English. 14. Now, my brother (like)_________________eating bananas. 15. Look! Aman (call)_________________you. 16. Keep silent ! I (listen )____________________to the radio. 17. ______________ you (play)_________________badminton now? 18. Everyday, my father (get up)_______at 5.00 a.m, but today, he (get up) __________ at 6.00 am. 19. Eve