1.
2.按照顺序：
Laos,Vietiane,plains,border,village,candles,lights,truck,chickens
3.按照顺序：
1）The western border of Laos.
2）They saw low mountains covered in trees.
3）Autumn is the best season to travel in Laos because it is cool and dry.
4）The river sounded like a man singing in a low voice.
5）After lunch they went to Vietiane by bys.
4.rich,fruitful,abundant,plentiful,pleasant,humid,scenic,interesting,peaceful,calm
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