unhappy,when,a long time,areleft,some,are,they,dogs,for,alon

unhappy,when,a long time,areleft,some,are,they,dogs,for,alon some dogs are every unhappy when they are left alone for a l Some dogs are very unhappy when they are left alone for a lo they ___ for some time when a message came . they had drunk for some time when a message came . dogs are friends of man,but a long time before they are going to stay in Beijing对 for a long time 提问 They are only study（还是studying) for long time. some of the dogs may a____ people when they are angry They talk ( ) a long time.what are they talking ( ) Dogs show their__ when they are angry. the two friends______each other for a long time before they