The GPS, originally _______ by the U.S. military, covers the whole world.A. deve

题型：江苏同步题难度：来源：

The GPS, originally _______ by the U.S. military, covers the whole world.A. developing
B. to be developed
C. developed
D. having developed

答案

举一反三

The disc,digitally ______ in the studio,sounded fantastic at the party that night.[     ]
A. recording
B. recorded
C.to be recorded
D. having recorded

题型：山东省模拟题难度：| 查看答案

The Hotel Al Arab, ________ the first and only 7-star hotel in the world, was designed in the shape of a
sail of 321 meters.[     ]
A. having been considered
B. considering
C. being considered
D. considered

题型：江苏同步题难度：| 查看答案

The manager promised to keep me _____ how our business was going on.[     ]
A. informing of
B. informed of
C. to inform of
D. on informing

题型：湖南省期末题难度：| 查看答案

You should remain silent at the conference unless ___ to speak.[     ]
A. invited
B. inviting
C. being invited
D. having invited

题型：浙江省期末题难度：| 查看答案

_______ in the story book that he had bought not long before,the boy didn"t notice his mother
go into his room.[      ]
A .Losing
B. Lost
C. Having lost
D. To be lost

题型：山东省模拟题难度：| 查看答案