Replace the underlined parts of the sentences (1-6) with the correct forms of the phrases from exercise 6​

Last day of summer vacation for a long time i remember. on this day i learned that awarded with the medal "for the salvation of the drowning". and it was so. in the summer i was visiting my grandmother in the village, where i made friends with dima. the day was fine, and we went to the pond to swim. dima was not a good swimmer, and at first kept closer to the shore. but then, looking at me, emboldened and swam away. in the middle he suddenly began to sink. i quickly turned around, with difficulty dragged a comrade back to shore. then i was very scared. but now settled down and very happy that i saved the other.

Dear Sir, I (am writing) to you to see whether your school (will be interested) in taking part in exchange visits with our school. Quite recently we (have done) research ... , in case you (haven't heard) the name before! I expect you might have seen some of the cars which (are made) here. ... And last year a new sport center (was built). ... We (have already found) many families here who would be happy to receive students from your school and many of us (are looking) forward to visiting your city.