Depression is very common in modern society. ________ 1 in every 33 children may have depression; in teens, that number may be ________ 1 in 8.
Helen was much kinder to her youngest son than to the others,___,of course,made the others envy him
At the beginning of the twentieth century,___the population all over the world?
Most environmental problem exist because___measures for preventing them were not taken in the past
He talked happily about the men and the books___interested him greatly in the school
—Do you have anything in mind___you’d like for supper?—Well,___is okay with me