Вставьте 1.The problem...by Russian scientists (1. has solved, 2. was solving, 3. has been solved) 2. If it... raining we will go for a walk ( 1/stops, 2. will stop, 3. stopped) 3. If I...free, I"ll go to the party (1.was, 2.ha...

Вставьте 1.The problem...by Russian scientists (1. has solved, 2. was solving, 3. has been solved) 2. If it... raining we will go for a walk ( 1/stops, 2. will stop, 3. stopped) 3. If I...free, I"ll go to the party (1.was, 2.have been, 3. am.)
Гость
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Гость
1 has been solved  2. stops.3 am
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