This machine is very easy ________. Anybody can learn to use it in a few minutes

This machine is very easy ________. Anybody can learn to use it in a few minutes

题型:专项题难度:来源:
This machine is very easy ________. Anybody can learn to use it in a few minutes.[     ]
A. operating  
B. to be operating
C. operated  
D. to operate
答案
D
举一反三
The old man sat in front of the television every evening, happy ________ anything that happened to be on.[    ]
A. to watch  
B. watching
C. watched  
D. to have watched
题型:专项题难度:| 查看答案
If he takes on this work, he will have no choice but ________ an even greater challenge.[     ]
A. meets   
B. meeting
C. meet   
D. to meet
题型:专项题难度:| 查看答案
As Jack left his membership card at home, he wasn"t allowed ________ into the sports club.[     ]
A. going            
B. to go            
C. go                
D. gone
题型:专项题难度:| 查看答案
Tom took a taxi to the airport, only ________his plane high up in the sky.[     ]
A. finding  
B. to find
C. being found  
D. to have found
题型:专项题难度:| 查看答案
No matter how bright a talker you are, there are times when it"s better ________ silent.[     ]
A. remain  
B. be remaining
C. having remained  
D. to remain
题型:专项题难度:| 查看答案
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