He ______ come to school at 7:00 am, but
题型：选择题
问题：
He ______ come to school at 7:00 am, but he was ten minutes late. [ ]
A. supposed to
B. was supposed to
C. is supposed to
D. supposing to
题型：选择题
2010年4月16日，冰岛埃亚菲亚德拉冰盖下的一座火山喷发，火山灰弥漫天空，严重影响欧洲的航空业。回答下题。
下图为地壳物质循环示意图，代表此次火山活动的地质过程及形成的岩石是（）
A.7，a
B.3，b
C.2，c
D.1，d