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.
The young tribal man helped Mrs. Davidson find her way back, in return for________medical equipment was offered to him by the latter.
The difficulty solving such a problem ten years ago was twice greater than________is today.
--- Damn! I________more to avoid that ! --- Don’t cry over spilt milk. Besides, it wasn’t your fault.
These monkeys are such quick thieves that they________your bananas when you realize what has happened.
As the________of Thomas Edison shows, a child who typically questions the most common facts may turn out a genius as a grown – up.