The correct answer is Both 1 and 2. Key Points A connector is a conjunction that links two or more things together. In the given sentence the person says that he did not want to go to the class but still he went there as usual. So, the connector which can connect these two sentences is 'Nevertheless' as well as 'Nonetheless. These two connectors are used when a second point is used as a contrast to the first point. Example - ​The competition was tough last year, but nevertheless/nonetheless, our sales increased. So, the correct sentence is - I did not want to go to the class; nevertheless/nonetheless, I went there as usual. ​Additional Information The types of connectors in English are: coordinating conjunctions, correlative conjunctions, subordinating conjunctions, conductive adverbs and prepositional phrases.​​ 'Therefore' is a conjunction that you can use as a transition word in sentences and paragraphs. It shows cause and effect between independent clauses. It is too dark to climb the mountain safely; therefore we'll continue.