英语完成句子求教No matter which area you hope to achieve something i

英语完成句子求教
No matter which area you hope to achieve something in,----------is very important.(faith)
无论你想在哪个领域获得成功,自信都是非常重要的.
when we entered the room,we saw a sign hanging on the wall,reading,"please----------------"(leave)
当我们进入房间时只见墙上挂着一个标牌,上面写道“请让一切保持原样”
A great deal of work---------------the peoples living standard.(improve)
已做了大量的工作来提高人民的生活水平