our dog,Rex,____(sit)outside our front gate and bark.应该把sit写成什么形式在说出为什么这样填，根据什么语法形式

our dog,Rex,____(sit)outside our front gate and bark.应该把sit写成什么形式在说出为什么这样填，根据什么语法形式 our dog,rex,used to sit outside our front gate and bark.为什么bark不用过去时?并列句used阿. Our dog ,Rex ,used to sit outside our front gate and bark .Every time he wanted to comeinto the garden he would bark until someone opened the gate .As the neitherbours complained of the noise ,my husband spent weeks training him to press his paw on t Look!The dog is ____(sit)there and____(look)____us.括号里面填什么 用所给动词适当形式填空his father makes him ____(sit) over there.i hope ___(work) hard to make our country stronger.his mother wants ____(buy) a new bike.she ____(not walk) to school every day.i love my dog and he ___ me too.(love) A:Whose dog is it?B:_______our dog._______name is Rex. sit on our talent there might be a big dog ____ there.A sit B sat C sitting 选C 为什么 sitting前不加is 英文翻译：我们老师的话终于变成了现实 Our teacher's words____ ____ ____ ____.a guide dog. We should give our ____ to the women with babies when they get on the bus.(sit) dog-sit的意思?翻译Can you dog-sit for the weedend? there might be a big dog ____ there.A sit B sat C sitting为什么呀 sitting 前 没有 be动词 our dog zip is always rex是什么意思 REX怎么样 Rex是什么意思? tyrannosaurus rex中的rex是什么意思? 一题英语不会急!like it dog with other look big by get let It is a rainy dat .Igo to school ____ bus.A woman _____ on the bus _____ a dog.And ____ feet are very dirty.The woman ____the dog sit on the chair .The conductor stops her.She says,I p