Вставьте слова
border, chain, coasts, flow, flows, flowed, stretch, plains, perfect,
valley, lilies-of-the-valley

1) Jack is a ,.. gentleman. He has always been like that. 2) A low ter¬ritory between two mountains or hills is a ... . 3) You can't cross the ... without a passport. 4) She was wearing a thin gold ... round her neck. 5) The Great Plains ... to the east of the Rocky Mountains. 6) The Volga ... from the Valdai Hills to the Caspian Sea. 7) Did the river ... into the sea?- — No, it didn't. It ... into the lake. 8).....are my favou¬rite spring flowers. 9) The sandy ... of California are popular with tourists and holidaymakers1. 10) Are there any ... in this hilly part of the country?