Bell is considered _____ the first phone in 1896. [ ]A. inventing B. ha

题型：黑龙江省期中题难度：来源：

Bell is considered _____ the first phone in 1896. [ ]
A. inventing
B. having invented
C. to invent
D. to have invented

答案

举一反三

ZhangHong appears _____ by heart 2000 words up to now.[     ]
A. to be learning
B. to have learned
C. to learn
D. having learned

题型：期中题难度：| 查看答案

Charles Babbage is generally considered _____ the first computer.[     ]
A. to invent
B. inventing
C. to have invented
D. having invented

题型：月考题难度：| 查看答案

Two years later,her father disappeared,never________again. [     ]
A. to be heard from
B. being heard from
C. heard from
D. hearing from

题型：同步题难度：| 查看答案

You are supposed ________ the work yesterday but you forgot.
A. to finish
B. to be finishing
C. to have finished
D. had finished

题型：期中题难度：| 查看答案

Alice, you were supposed ________ your paper last Sunday. Why haven"t you finished it yet?[ ]
A. to finishing
B. to have finished
C. finishing
D. having finished

题型：期中题难度：| 查看答案