材料预付款支付的条件是( )。 A．材料设备将被用于永久性工程 B．材料设备的定单

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号(∧)，并在其下面写上该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改l0处，多者(从第ll处起)不计分。

例如： It was very nice to get your invitation to spend ∧ weekend with you. Luckily the I was completely free then, so I'll say "yes". I'll arrive in Bristol at around 8 p. m.  am in Friday evening. on

 
Last weekend we went mountain-climbing. Even the heavy rain in the morning could not prevent us go. Setting off very early, we went along an extreme narrow road, all in high spirits. On every side of the road were green fields and some farm houses. We could hear the sound of the rain and our footsteps mixing with our laughter. At noon we reached the top of the mountain. That surprised us most there was the beauty of the scenes. After having short rest and sharing with the food we had brought, we started going down. It had rained even harder. We were wet to the skin, and we still sang and laughed happily.