阅读克隆羊多莉的有关信息：

科学家先将A羊卵细胞的细胞核抽出来，再将B羊乳腺的细胞核取出，注入A羊的无核卵细胞中，这样就得到具有B羊细胞核的卵细胞．这个卵细胞经过分裂形成小小的胚胎．再将这个胚胎移入C羊的子宫内，让他继续发育，一段时间以后，一只活泼可爱的小羊出生了．这就是多莉．小多莉长相一点也不像C羊，而是几乎跟B羊一模一样．

试分析：

学校组织学生参加“环卫小天使”活动，把参加的同学分成6人一组还剩1人，平均分成8人一组也剩1人．参加本次活动的同学至少多少人？

    Here are t____ pictures. A man and a boy are in one picture. Who are they? L____ me tell you. The man is Mr. White, and the boy's n____ is Bill. He's the man's son. Now they are in Bill's bedroom. We can see some Chinese b____ on his desk. And on the bed, t____ is a shirt. It's Bill's. His trousers are on it, too.

    Now let's l____ at the other picture. You can see a woman and a girl in it. The woman is Bill's m____ and she's in her daughter, Ann's room. You can see a photo o____ the Whites on the white wall. W____ that on the floor? Oh, it's Ann's hat. but it looks l____ a brown cat.