育才小学的同学参加团体操表演，排成3个方阵，每个方阵10行，每行有9人。参加团体操表演的有多少人？
10×9×3=270（人）
取得房地产经纪人执业资格是从事房地产经纪活动的基本条件。( )
Of course, there have been times, as a young man, when I got tired from study and devoted my time to playing.()
A. tired of
B. got tired of
C. tired up
D. used to tire of
