The mother was trembling with anger . She ______her son and said nothing.
The process of growing up is complex for every person, ________ there are many influential factors in a person's growth as well as the development of his personality.
The doctor was busy writing an essay in ________ with his recent research.
A thousand words will not leave so deep an ________ as one deed.
—Mr. Black, I think you have good taste in ________ art. So would you like to take ________ look at the painting?—Yes, I'd love to.
Though you've got a tight schedule these days, I should be ________ if you could spare time to attend our meeting today.