The moment the 28th Olympic Games _______ open, the whole world cheered. [

题型：甘肃省期中题难度：来源：

The moment the 28th Olympic Games _______ open, the whole world cheered.   [     ]
A. declared
B. have been declared
C. have declared
D. were declared

答案

举一反三

In the rainforest of the Amazon, 50 to 150 plant species ______ every day. [     ]
A. are being destroyed
B. are destroying
C. have been destroyed
D. destroyed

题型：北京模拟题难度：| 查看答案

All flights ___ because of the storm, they had to wait in the hall. [ ]
A. have put off
B. were put off
C. have been put off
D. having been put off

题型：安徽省模拟题难度：| 查看答案

Millions of pounds" worth of damage _________ by a storm which swept across the north of
England last night.   [     ]
A. had been caused
B. has been caused
C. will be caused
D. will have been caused

题型：广东省期中题难度：| 查看答案

The manager ___ the workers how to improve the program since 9 a.m. [ ]
A. has told
B. is telling
C. has been telling
D. will have told

题型：高考真题难度：| 查看答案

All the preparations for the task ___,and we"re ready to start.     [      ]
A. completed
B. complete
C. had been completed
D. have been completed

题型：同步题难度：| 查看答案