polar bears live mostly on__ sea ice,which they use as a platform for hunting seals.这句为什么不能用a

do polar bears live in africa? （ ）Polar bears live mostly on _____ sea ice.A.a B.an C./ D.the The polar bears look like bears,__they? How big are polar bears American speak ________. Canadian speak____and____. Japan speak（）.Gemany speak ()France speak ()Lions only live in()Polar bears live in the() 连词成句（英语） 1,；to zoo could tell you me the the?2；polar bears in live the arctic. polar bears live mostly on__ sea ice,which they use as a platform for hunting seals.这句为什么不能用a 英语翻译Polar bears live in the Arctic.They do not stay in one place.They travel across the snow and pack ice looking for food.Sometimes they swim far out to sea.Polar bears are the largest bears in the world.Adults weigh 650 to 1100 pounds (295 英语作文 Polar bears are in danger100词左右 There are no polar bears in the south pole同义句 There are---- ---- polar bears in the south pole. It seems that Polar Bears are gentle animals.(同义句）Polar Bears seems ______ _______ gentle animals. 英语翻译They are small like grasses and bushes.Many kinds of animal live there .Some large animals are polar ,bears,seals,and walruses.Small animals like birds and foxes live there,too. How many questions can you answer?的答句格式只要答句格式就好!How many questions can you answer?How big are polar bears?What is the favourite food of polar bears?When do arctic foxes live in groups?What is the favourite food of arctic fox polar bears(北极熊)(live,lives ,are living)in the north pole(北极)选择括号里的正确的答案what(happens,happend,was happening)yesterday?lt(rians,rianed,will rian)this afternoon polar bears live mostly on__ sea ice,which they use as a platform for hunting seals.为什么这里不用填?后面明明有一个非限定性定语从句修饰啊? what does the polar bear live （ ）do the koala bears live? Koala bears live in Australia是什么意思