Do you know how many countries there are in————?括号你面填什么

There are many birds ( )that tree.DO you see them?括号填什么?A.in How many countries are there in the Do you know how many deer ( ) in the zoo?A are there B there do you know how many kinds of animals there are（ ） farm 括号里应 阅读理解填词Do you know how many pandas there are in the world WWF 翻译:和do you know how many people there are in my family and w 1/为什么是Do you know how many colours there are in the rainbow? Do you know how many s____ there are in the Bird's Nest（树上鸟巢 Do you know how many _________(people) there are in China no Do you know how many tigers there are ( )in the zoo?A.live B DO you want to know how many d___ are there in the novel how many——（ visit） are there in the museum?横线上填正确形式