The world today different without the amazing discoveries produced by great scientists.
-- Why didn't you go camping with us? -- But I ______ all about it!
-- When do you need to pay the balance? -- ______ December 31.
. I think ______ information of this kind is help when you look for a job.
I really don’t know _______ I put my wallet.
There is no _______ to think more about the matter. Take it easy.