Mark Twain left_____ school at _____ of twelve to look for work. A the ; the B / ; the C / ; / D the ; /
—I have to cut the expenses to meet the daily needs. —So do I, for the prices of goods _________ going up these days.
Professor Wu keeps __________ his students that the future __________ to the well-educated.
Being afraid of making mistakes, the little boy __________ answer his teacher's questions.
The president was so absorbed in his work that not a sound __________.
She is a bit shy and __________ stand up and answer the teacher's questions.