Bob would have helped us yesterday, but he _____. [ ]A. was busyB. is busy C

题型：安徽省高考真题难度：来源：

Bob would have helped us yesterday, but he _____. [ ]
A. was busy
B. is busy
C. had been busy
D. will be busy

答案

举一反三

Scientists have many theories about how the universe _____ into being.
A. came
B. was coming
C. had come
D. would come

题型：0114 期中题难度：| 查看答案

The Roman Empire _____ for several centuries.
A. exists
B. existed
C. was existed
D. is existing

题型：0115 期末题难度：| 查看答案

After the traffic accident, no one _____ except a few people who were badly injured.
A. survive
B. survived
C. was survived
D. was surviving

题型：0112 期末题难度：| 查看答案

Hidden _____ by a big tree, his house was not to be seen.
A. as it was
B. as it is
C. as it did
D. as he did

题型：山东省期末题难度：| 查看答案

My father knows a lot about American culture, for he _____ there for 2 years, and then he returned home. [ ]
A. stays
B. stayed
C. would stay
D. have stayed

题型：月考题难度：| 查看答案