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IN VIET NAM, CHILDREN START GRADE 1... THEY ARE 6...
IN VIET NAM, CHILDREN START GRADE 1... THEY ARE 6 YEARS OLD. IN...
BAI KIEM TRA 1TIET SO 2 HOC KY 1 LOP2
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21. In Viet nam, children start grade 1... they are 6 years old.
A. when B. which C. how D. while
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21.
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BAI KIEM TRA 1TIET SO 2 HOC KY 1 LOP2