【推荐1】When a predator (掠食动物) always eats huge numbers of a single prey (猎物), the two species are strongly linked; when a predator lives ________ various species, they are weakly linked. （用适当的词填空）

【推荐2】They have lost touch ________ what is happening in the country. （用适当的词填空）

【推荐3】I am doing this _____a favour to Ann; after all, it is not part of my job. (用适当的词填空)

【推荐1】When it comes to Chengdu, the first thing that comes to your mind is pandas, which are native ________ Sichuan.（用适当的词填空）

【推荐2】As we all know, the panda is native________ China. (用适当的词填空)

【推荐3】She says the introduction of the plants and animals not native ______ Hawaii is the main reason for the extinction.（用适当的词填空）