they look very uncomfortable这句话里的look为什么不用looks?they不是第三人称么?

they look very young They looK very smart.--------they------They looK very smart.--------they---------very smart?改为一般疑问句 they look very uncomfortable 如何翻译 pandas are playing ,they look very lovely They look very u______.（不舒服的） they look very (unomfortable).括号部分提问 They look the same,but they are very different是什么意思 They () very happy. A. look B.look at C. look like D. is looking they look very uncomfortable这句话里的look为什么不用looks?they不是第三人称么? Z____mainly live in Africa and they look very beautiful. But they the look are very the different. look at the (deer) they can run very fast when pandas are playing ,and they look very lovely对吗 Look at these flowers!They s_ very sweet. The cakes look very beautiful,and they differ shape. look at the (deer) they can run very fast Look at the__(watch).They are very nice. all of them look very happy.为什么不用they.