—You seem familiar with Mr. John?—Of course, we________ together for three years in the 1990s.have worked B. had worked C. are working D. worked
There seems to be something wrong with Tom. It is not _________ of him to be so critical.
There is no doubt _________ Qu Yuan has become an everlasting monument in the history of Chinese literature.
Mr Smith is _________ success as a businessman ; he takes _________ possession of several big companies.
—Shall I stay here or play basketball with my friends?——__________________.
It is a common theme in many fiction stories that the world may one day be _________ by insects.