用am/are/is/am not/isn't/aren't 填空：There ----some fish on the

are
再问： 把下列单词变成为复数形式。1，bird ＿ 2，horse＿ 3，boy＿ 4.bear＿ 5.chicken＿
再答： birds
horses
boys
bears
chickens