填空题
1. In winter, many birds ______（迁徙） to warmer places in the south to live through the cold months.
2. A ______（一群） of wild ducks flew over the lake at sunrise this morning.
3. Tom ______（injure） his leg during the football match, so he could not play for two weeks.
4. My sister and I ______（轮流） to wash the dishes after dinner; I do it one day, and she does it the next.
5. The mother bird sits on her eggs every day, and the baby birds will ______（孵化） in about two weeks.
6. Water is ______（丰富的） in this region because there are many rivers and lakes here.
7. The sun came out after the snowstorm, and the snow on the road slowly ______（melt）.