The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair.
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What people say
Every good tutor should be a) a good specialist; b) a generous and open-minded person. So First of all Sam Smith is an extremely knowledgeable teacher and tutor With a very wide knowledge of practical tips for different teaching situations and contexts. Secondly, As a person he is very patient, understanding and generous to share all he knows. He is very organized and disciplined, always meeting the deadlines and approachable – is easy to get in touch with and always there to help you out. (Galina Abramova)
Galina Abramova Linguistics PhD.