Mary told me that the book must ______ to the library in two days.
—It is selfless the doctor to devote all the time he had to caring for the patients. —I think so, they are so great.
Of all my classmates, often goes to the Internet café to kill time.
If we sit near front of the bus, we’ll have better view.
A. space B. camp C.safety
A. invite B. lively C. sick