把6个棋子放入5个盒子里,至少有一个盒子要放( )个;要放入3个盒子, 平均每盒要放( )个。
Thanks for_____ me _____ your house .[ ]
A. invite, for
B. inviting, to
C. inviting, for
D. invitation, for
反映焦碳抗碎强度的指标是M10。