His illness ________ his absence.So don’t scold him.
The man _______ the little boy and said , “You are so clever and lovely . I love you very much.”
________ work has been done to improve the people’s living standard.
He made another wonderful discovery , ____ of great importance to science.
Most villagers agree that horses are far more pleasant _______ than tractors, but they are less efficient.
—Well, Randy is not quite ready to make a decision yet.—So, ______, we have to wait, right?