He has devoted himself __ mankind.
Robert is said ____ abroad, but I don’t know what country he studied in.
A. to have studied B. to study C. to be studying D. to have been studying
Wang Gang is considering buying a computer, is considered to be a great help in our work and study.
A. as B. which C. that D. what
When we climbed up to the top of the mountain, we were all ___________.
A. out of the breath B. short of the breath
C. out of breath D. short of breaths
—I' m sorry, but I didn’t mean__________ out your secret.
—But you know, letting out one's secret means________ one' s feelings.
A. to let; to hurt B. letting; hurting
C. to let; hurting D. letting; to hurt
We visited the factory ________ makes 80 percent of the toys in the city.
A. where B. there C. in which D. which
