______ my little brother is a child , he knows a lot.

 -- Let me help you carry the box.-- No, thanks. It’s big,             there is nothing in it.

You will fall behind others_______ you work hard.

The boy doesn’t speak       his sister, but his written work is very good. 

--- This history book is of great value. --- Exactly. ____________ can be enjoyed from it ____________ you have a deep understanding of it, however.