Choose the correct words. we don't agree with your campaign. we have because/therefore decided not to sign the petition 1 we think that trains are better than cars as /therefore they produce less pollution. 2 as/ for this reason, we need to support this charity 3 ididn't buy that writing paper because / therefore i didn't have enough money. 4 as/therefore you were out when we called, we have decided to write you a letter. 5 he isn't going to join in the march for this reason /because he's playing football tomorrow. 6we don't agree with motorways as/for this reason they are bad for the environment. 7 we're unhappy about the situation and we have as/therefore decided to protest.