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.
There is a bridge ___________ the river. Many boats go ___________ it every day.
______ today–It’s Monday.
Was it ________ the international conference that made the city the focus of this area
The girl __________ glasses is my sister. Do you know her——No, I don’t.