when ____ in arctic regions,they construct huts as temporary winter shelters.A travel B traveled C traveling D they traveledthese compounds could not have formed if the chemical reaction _____ stopped.A has been B was C would have been D had been第

Arctic when ____ in arctic regions,they construct huts as temporary winter shelters.A travel B traveled C traveling D they traveledthese compounds could not have formed if the chemical reaction _____ stopped.A has been B was C would have been D had been第 Where does the polar bear( It( )in the Arctic. Where can the arctic hare hide in winter? What ____ you ____(do) when I came in? 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 In winter,arctic fxes live in countries where it is warm.In winter,arctic foxes live in countries where it is warm. Please ____(knock)at the door when you come in. in his fifties=when he was ____ _____fifty The polar bear lives in the Arctic.（用Asia改为选择疑问句） Some of us are trapped as ice in the Arctic.中trap的意思是什么? Don't snakes live in Arctic?如何翻译?肯定回答和否定回答是什么? How many times ____ you ____(see) films when you were in Beijing?为什么 When ____ the PLA ____ (found)?In 1927回答并说明理由 英语翻译I recently spent two years in the Arctic filming the series Blue Planet.I love being in an environment that hasn'tchanged for 20,000 years.Of course it's freezing,but it must be a healthy place because you never catch colds.When I'm filmi 英语翻译polar bears are very big.Their fur white.So other animals cannot see them when they hunt.Their favourite food is seals.Arctic foxes have beautiful white fur.In winter ,the foxes live in groups.They make tunnels under the snow.Their favour Read the following,point out the mistakes and make necessary corrections.1 Our host entertained us with many interesting stories of adventure; and he had been a member of an exploration team working in the Arctic.2 When I woke up I saw him asleep in when he stayed in beijing=during his ____ in beijing