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be anxious about 为...而忧虑 We ’ ve been anxious about you since you got lost. 自从你走失以来,我们一直为你担忧。 7 be busy with 忙于... He is always busy with his farm work. 他总是在忙农活。 8 be fit for 适合于 If we go on polluting the world , it won ’ t be fit for us to live in . 如果我们继续污染世界,它将不再适合我们居住。 9 be fond of 爱好、喜爱 Are you fond of country music ? 你喜欢乡村音乐吗? 10 be made up of 由...组成 It is made up of four countries. 它是由四个国家组成。