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.
Time ________ quickly. Three years passed before we knew it.
Mr. Smith is busy these days ________ a new book on how to develop a child’s reading skill.
It makes no ________ to me what she says. I won’t care.
Who do you think is the right person to ________ the task?
He transplanted the young tree to the park ____it was the best time for it .