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.
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.
the past tense of end is ended.
There is no past tense of the word "Aunt".
Exited is the past tense of exit.
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.
'Was' is the past tense of the word 'is'.
The word "were" is past tense. It is the past tense of the verb "to be."
It is the past tense.
Ate is the past tense of the word eat. Its a past tense word
"received" is the past tense. The present tense of that word is "receive"
What is the past tense word for think
The word recognized is the past tense.
The past tense of the word forget is the word "forgot".
The past tense of word accept is accepted.