they are walking over the bridge为什么walk要加ing?求解释

walking they quickly are 连词成句 翻译They are walking off the road. they are walking at the beach 和 they are walking on tht beach有什么区别 They are WalKing over the bridge.(划线提问)They 英语连词成句bridge,they,over,are,walking,the They are walking home after _____(pick) apples 英语填空:they are walking home after p____ corn. They are very after walking for two hours.怎么填? They are They are --- at home after walking a long way A relaxing B relaxed where are they running ?和where are they walking?中文的表达是? They are walking,______ ______?( ) A.are they B.aren't they C.are there D.aren't there The monkeys are walking a____ the zoo .They are not in the cage.中填什么? Are You Walking 歌词 They are walking home after ___ the work.A.finish B.to finish C.finishing they are walking in the park提问in the park拜托,悬赏100 they are walking over the bridge为什么walk要加ing?求解释 they are walking over the bridge中的over改成across有没有问题?可以改么? 改错：Although it is raining hard,but they are still walking in the rain.