Which verb form is used to indicate present perfect tense?

verb or verb + -s
will + verb
have + verb + -ed
have + verb + -ing

Study the poster created by the new hampshire committee on public safety during world war i.which persuasive techniques does the poster include? select two options.transferfaulty logicbandwagonglittering generalitiesfear

How can you paraphrase this, this is about golden age fallacies.these are all rational people who know that older is not necessarily better, but many are taken in by this fallacy and seem no longer able to reason with any degree of reliability

Based on this chart, how many details should each event contain on the time-order chart? (site 1)