Choose the correct options to complete the rules
Past Simple form: a regular verb + [-ed|-ing]or the [past|past participle] form of an [irregular|irrelevant] verb.Past Simple is used to talk about [an action in progress|a finished action]in the past.
Past Continuous form: was/were + a verb + [-ed|-ing].Past Continuous is used to stress the [fact of a completed action|length of an action] in the past.
Past Perfect form:[have|had]+ the past form of a regular verb or [past|past participle] form of an irregular verb.Past Perfect is used to talk about an action which was [finished before another past action|in progress in the past].
Past Perfect Continuous form:[have|had] + [been|be]+ [-ing|-ed]form of the verb. Past Perfect Continuous is used to describe a [past action in progress|completed past action]which started before a particular time in the past and was [in progress|finished] up to a certain time in the past.