Complete the sentences so that they mean the same as the original sentences. 1. my sister started studying maths at 4 o'clock. she is still studying it. my sister maths since 4 o'clock. 2.jane is really selfish - she doesn't like anyone else. jane is really selfish - she only . 3.it is a long time since kate emailed me. kate hasn't a long time. 4, tom can take care of himself. bill can take care of himself, too. tom and billcan both . 5. nobody helped us - we did it on our own. nobody helped us - we did it