Cost is one of a few verbs which have the same word for the verb, the past form and the past participle.
verb = cost
past = cost
past participle = cost
The books cost a lot of money.
Last week the books cost less than this week. past simple sentence
cost
It is "cost" (same form as present tense).
Cost is past tense of cost that can be used in present tense form.
Cost is the present, past, and future tense of cost.
Inventory is a noun so it does not have a past tense. The closest you can get is the verb invent, in which case the simple past tense is invented.
cost
What is your question?Are you asking what is the simple past tense of "pay"?Paid is the simple past tense of pay, as there is no simple past tense of of paid. Paid is already past tense.
The simple past tense of have is had.
The past tense of "cost" is "cost" and the past participle is also "cost." For example: "The shirt cost $20." (past tense) and "The car has cost me a lot of money." (past participle).
It is "cost" (same form as present tense).
The simple past tense of 'am' is 'was' or 'were'
The simple past tense is had.
The simple past tense of 'be' is 'was' and 'were'
The simple past tense of "blow" is "blew."
The simple past tense of break is "broke".
The simple past tense of stride is strode.
The simple past tense (and past participle) is felt.