【推荐1】If you don’t know the meaning of the word, you can refer ________ the right-hand column of page 200 of this dictionary . （用单词适当形式填空）

【推荐2】In fact, tradition also refer ____ the things that have been developing and that are still being created.

【推荐3】Do we know how many people this passage refers ______? （用适当的单词填空）

【推荐1】What about dividing ourselves ________ four groups?

【推荐2】Few people can stick ___________ a diet for long. （用适当的词填空）

【推荐3】Dark clouds were gathering in the skies over Europe. War was soon to break________. （用适当的词填空）

【推荐1】I think it is a kind or win-win activity. ____________, I can help take care of the children. ____________, I can improve my English, make more friends, and enrich my life during the summer vacation.

【推荐2】He made one big mistake, and, ________ a result, lost his job. (用适当的词填空)

【推荐3】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）