the Smiths have three daughters,____are working in a local hospital.答案是two of whom,我填both of whom,谁能给我讲解一下用whom不用them是因为这是定语从句吗

The Smiths usually have lunch at home at__? The Smiths _____(have) a picnic next Saturday. The smiths have been in China for two years.改成（ ) ( ) two years since the Smiths came toChina The Smiths don't have supper at home.They have it at the r____.快 The Smiths是单三么 The Smiths are Americans. the smiths同义词 The Smiths (have been living) here for ten years 为什么不能用 have been lived The Smiths usually have supper at half past six(变为反意疑问句）The Smiths usually have supper at half past six,______ ______? The Smiths are going to have a picnic in the park this weekend .翻译成中文! the smiths have s enough money for their summer holiday at the beach. The Smiths——China since 1996.A have comeB have been toC have been inD have come to The Smiths don't have enough money for a new house.(写出同义句）The Smiths ____ ____ a new house. 英语的改句子.The Smiths have moved to London for almost ten months.____ ____ almost ten months since the Smiths ____ to London. the smiths always ( )supper ai this time.have的正确形式 the smiths have lived here since 10 years ago的同义句是什么 The smiths usually have supper at half past six（完成反义疑问句）? It's half past six,the Smiths are having supper.中are having为什么不用have?