Раскройте скобки, употребляя глаголы в Past Perfect или Past Indefinite.
1. When I (to come) home, mother already (to cook) dinner.
2. The teacher (to understand) that a pupil (not to do) his homework.
3. By the time the train (to reach) the city, he (to make) friends with many
passengers.
4. During the holidays my friend (to visit) a village where he (to live).
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