The word research is a noun, a common, abstract, uncountable noun; a word for a systematic investigation to establish facts or principles or to collect information on a subject.
The noun forms foe the verb to research are researcher, and the gerund, researching.
Researched
researcher
The word industry doesn't have a past tense or a present tense as it is a noun.
The past tense for dip is dipped.
Exited is the past tense of exit.
the past tense of end is ended.
There is no past tense of the word "Aunt".
This question is not valid because the word "did" is already in the past-tense. The present-tense version would be "do".
"Sped" is the past tense version of speed.
The word dived is one form of the past tense of to dive, and the past participle.The other version of the past tense is dove.
Ate is the past tense of the word eat. Its a past tense word
The past tense of 'is' is 'was'.
What is the past tense word for think
The past tense of the word cry is cried.
The past tense is were.
The past tense of "after" is "aftered," but it is not commonly used. Instead, the past tense is usually indicated by using the word "after" in combination with a verb in the past tense. For example: "He arrived after the party had ended."
The word "had" is a past tense verb.
The word "were" is past tense. It is the past tense of the verb "to be."
The past tense of the word "agree" is "agreed."