A lot of language learning ,_______has been discovered, is happening in the first year of life, so parents should talk much to their children during that period .
Samuel Clemens, _____ Mark Twain, became a famous American writer.
– Could you tell me his phone number? -- _______ the phone book and find it out yourself.
She ____ his number in the phone book to make sure hat she had got it right.
– You’re left the light on. -- Oh, so I have. _____ and turn it off.
With him ______ the way, we had little trouble finding the school.