【推荐1】He is the only man________ (know) the truth. (所给词的适当形式填空)

【推荐2】It____________(know) for a long time that Yellowstone was volcanic in nature that's what accounted for all its hot springs and other steamy features. (所给词的适当形式填空)

【推荐3】Though not ________(know) to use tools in the wild, the birds have proved skilful at tool use while kept in the cage. (所给词的适当形式填空)

【推荐1】With the government's aid, those ________(affect)by the earthquake have moved into the new houses. (所给词的适当形式填空)

【推荐2】You can put the books in the ________ (appoint) place, and other participants can have free access to them. (所给词的适当形式填空)

【推荐3】The museum, ________(locate) next to the Wuzhen scenic spot, covers an area of 5,000 square meters. (所给词的适当形式填空)