Ενδεικτικές λύσεις των 9 φιλτραρισμένων κλειστών ασκήσεων: πολλαπλή επιλογή, matching, ανώμαλα ρήματα, Past Continuous/Simple, because/as, but/although, 3rd Conditional, επίθετα -ful/un-.
Απάντηση: 1-c, 2-b, 3-a, 4-a.
Απάντηση: 1-resources, 2-body fluids, 3-appliances, 4-domestic animals, 5-drain, 6-affect, 7-leaking pipes, 8-promptly, 9-household, 10-flush the toilet.
Απάντηση: kept, came, made, did, met, knew, was/were, could, read, told, taught, bought, thought, brought, sat.
Απάντηση: watch/ring, realise/prepare, have/go, get down/break, read/arrive, leave/meet, sing/knock, rain/go wrong, get on/see, go to/return.
Απάντηση: Because Mr. Nikolakis forgot his life in Greece, he returned to the USA. / Because Americans care about their country, they keep it clean. / Because Greek people are friendly, Athens is visited by many tourists.
Απάντηση: The Nikolakis family didn't stay in Greece, but they had a nice holiday. (Although... they had a nice holiday.) / Mrs. Nikolakis didn't like the noisy streets, but she bought a lot of presents. / Their children had to go back to the USA, but they liked their Greek cousins.
Απάντηση: If Americans had not cared about their environment, they would not have used lead-free petrol. / If Greece had not made some progress, lead-free petrol would not have been introduced. / If Mr. Nikolakis had not settled in the USA, he would have seen the progress of Greece. / If his family had not known life in the USA only, they would have understood the Greek lifestyle. / If New York had not been polluted, people in the center would not have suffered. / If the sea close to big harbours had not been polluted, we would have been able to swim.
Απάντηση: careful, helpful, useful, wonderful, fruitful, cheerful, peaceful, wasteful, stressful, dreadful, forgetful, thankful.
Απάντηση: unhappy, unlucky, unusual, unable, unfortunate, untidy, uninteresting, unpleasant, unkind, unnecessary, unfair, unfriendly.