工业电脑机箱:"Dad cleans the yard every morning."是什么意思？

"Dad cleans the yard every morning."是什么意思？ _____ cleans the blackboard is to be praised your dad has done many great things over the years oklahoma,by the time I was eight I was lelping dad fixup low-income rental properties One day Dad was reading the paper. “Listen to this, everybody,” he said. dad好吗? 中文的“妈”与英文“mum”，"爹"和“dad”相识，有关系吗？ Your father calls me me "Dad".I'm you ( ) ----------------------什么意思 Dad has changed the three bulbs we use most in my house to compact fluorescents。请能者翻译。 There's my Mum and Dad ,and my two sisters.中的"sisters"是姐姐还是妹妹