Insert prepositions through, for, on, at, about and translate them into Russian:
1. We trudged home the snow.
2. Further effort negotiations have broken down.
3. The sergeant was whining how hard he had been forced to work recently.
4. She sat quietly, meditating the day’s event.
5. The just-weaned calf bawled its mother.
6. The dog sniffed the visitor.
