11. Mr. Nam (buy)........................that motorbike since last September. 12. Listen! Birds (sing)........................ 13. ...................Bears (like)......................... honey? 14. What ................you (do) .......................now? - We (play) .........................soccer. 15. Mr. Thanh (teach) ...............................me English. 16. Where ........................your mother (be).....................? - She (be).....................in the bathroom. May be, she (have)........................a bath. 17. We(visit)..................................our grandparents this weekend. 18. Look! The bus (come).......................... It (stop).................................here. 19. Mai (brush)..............................her teeth after meals. 20. They (live)........................with her grand mother in HN now. 21 We ( already finish)........................the first semester.