问题
选择题
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
答案：D
题目分析：考查非谓语动词。句意：这台机器很容易操作。任何一个人都可以在几分钟内学会使用它。operate与的逻辑主语是人，是主动关系，排除B、C；sth is easy to do...做某事很容易，故选D。