I. Fill in each gap with a suitable word (20pts): Vietnam is in the South- East Asia. It has (1) ________ of beautiful mountains, rivers and beaches. (2) ________ are two long (3) _________ in Vietnam: the Red River in the north and the Mekong River in the (4) _______. The Mekong River is the (5) _______ river in the South- East Asia and of course it is longer (6) _______ the Red River. The Mekong River starts in Tibet and (7) __________ to the Bien Dong. Phanxipang is (8) _______ highest mountain in Vietnam. It’s 3,143 meters (9) ________. Vietnam also (10) ___________ many nice beaches such as Sam Son, Do Son, Nha Trang, Vung Tau.