英検準2級ライティング 採点お願い致します🙏
QUESTION Do you think students should wear a school uniform at school?
QUESTION Do you think students should wear a school uniform at school?
n (3) Sn = bk + n- -1 Σ bk + Σ bk+1 2BWKTĚ, Sn & nDATELAIN. k=1 k=1