The Mulan River ______ runs through the city is our mother river.
A:who
B:which
C:whom
根据以上材料回答:
①没有月色的夜晚,天空一片黑暗。____
②女娲冒着生命危险,把天补上了。____
③人们一直过着快乐幸福的生活。____
④太阳每天从东方升起。____