用方框中所给单词的适当形式填空，每词限用一次。

we; young; money; wash; behind

（1）It’s a good habit to ＿＿＿＿＿ hands before meals.

（2）Alice often gives ＿＿＿＿＿ to help protect wild animals.

（3）Bob’s grandma is eighty, but she looks much ＿＿＿＿＿ than she is.

（4）We believe that ＿＿＿＿＿ home town will be more and more beautiful.

（5）There was a playground ＿＿＿＿＿ the classroom building in my school ten years ago.