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10. How heavy is your suitcase?

11. They have teached in this school 5 years ago.

12.  I have start learned english in 2006.

13.  If Hoa weren't busy, she will help her mother with the housework.

14. Unless it rains, our crop will be good

15. It has never spoken to a foreigner before

16.  In spite of a bad day, we went out for a picnic

17.  We havent's visited Ha Noi three years ago 

18. She wishes she can speak French fluently

19.  I spent three hours made this pottery jug

Chúc bạn học tốt ^^