—We need to learn and work ______ we live.—I think so.
No one told us _______ ,so we need your help.
The _______ driver drove his car very ____ ___ and it crashed _______ a tree.
Both of _______ heard a loud noise .It was _______ thunder.
The _______ news made all of us very _____.
The group of trees provided some shade ______ the sun .