1. The sentence is "They have got a new camera." Here, "have got" is correct because "They" is plural. 2. For "My sister _______________ a scooter," the subject "My sister" is singular, so the correct phrase is "has got." The sentence is "My sister has got a scooter." 3. For "This house _______________ big windows," the subject "This house" is singular, so we use "has got." The sentence is "This house has got big windows." 4. For "Jenny _______________ two brothers," "Jenny" is singular, so use "has got." The sentence is "Jenny has got two brothers." 5. For "Mermaids _______________ tails," "Mermaids" is plural, so use "have got." The sentence is "Mermaids have got tails." 6. For "We _______________ long hair," "We" is plural, so use "have got." The sentence is "We have got long hair."