例句與造句

1. hy i am in grade seven and my text book doesint say why so if you could help me out than . . . yah :-p why are some volcanoes more explosive than others ?-- 24.64.223.203 03 : 59, 8 December 2005 ( UTC)
2. It's difficult to find doesint in a sentence. 用doesint造句挺難的