一面墙上贴的瓷砖有9行9列，小华打算在墙上贴一组正方形图案，这组图案正好能贴满4块瓷砖，一共有（ ）种不同的贴法。
64
All but one _____ take part in the conference ＿＿ tomorrow.
A．is going to that is to take place
B．are going to that is about to take place
C．are going to that is to be taken place
D．are going to； which is to be held
我国小学德育的内容是什么？
