Choose the correct word and copy the sentences.
1) lions are (clever, cleverer, the cleverest) tham tigers. 2) the ( cleverer, cleverest, cleverer) domestic animals are the horse and the dog. 3) the (clever, cleverer, cleverest) wild animals are monkeys. 4) the (big, bigger, biggest) animal is the elephant. 5) the giraffe's neck is (long, longer, the longest) than the tiger's.