1 . The three companies set a(n) ________ (needing a lot of effort, money or time to succeed ) goal for themselves to plant 20 million trees by 2024. （根据英文提示单词拼写）

2 . When I was a kid, my parents encouraged me to help those who were ________ (lacking one pr more of the physical or mental abilities that most people have). （根据英文提示单词拼写）