To be:he, she, it isI amwe, you, they are___ he, she, it, I waswe, you, they were ___he, she, it has beenI, we, you, they have been___he, she, it, I, we, you, they had been_____After a form of to be you can have an -ing form, an -en form (past participle), an adjective, or a noun. The tense...