By Tenses, Elanguest

The first sentence is grammatically correct because the word 'after' in the sentence indicates that the speaker is talking about a list of events happening in chronological order..the past perfect is used when you speak about something that happened in the past and then you MOVE BACK IN...

1. ...have promised to inform people (the people?) about the beginning of the strike... - In this case both people and the people are accepted. The use of the makes your sentence more specific since it would be directly referring to the group of people who will be effected by the strike. However,...

He usually have to takes 10 seconds to get dress.1. The adverb 'usually' in your sentence indicates routine - therefore you need to use the PRESENT SIMPLE tense. This particular tense needs the -s at the end for HE / SHE/ IT. That is why we say 'He usually takes...' THIS...