can
[动词]
to be able to do somehing, make something, etc.

能, 可以
Ex: As a programmer , can develop complex software applications .
should
[动词]
used to say what is suitable, right, etc., particularly when one is disapproving of something

应该, 应当
Ex: should refrain from spreading false information on social media .
to be
[动词]
(auxiliary) used with the past participle form of a verb when forming the passive voice

被, 是
Ex: The was answered by the expert .
to do
[动词]
(auxiliary verb) used in forming interrogative and negative sentences

做, 干
Ex: You understand the processdon't you ?

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