___ staying at hotels in Red River Village, tourists can help the villagers make money so that they can take _____the river and the birds.
--- Haven’t seen you for ages! Where have you been ? --- I went to Ningxia and _______ there for one year, teaching as a volunteer.
When _________ our national flag _______, we feel our hearts full of pride and strength.
Since the time humankind started gardening, we __ to make our environment more beautiful.
All the books donated by the students from urban schools are said ________ to the students in the earthquake-stricken areas the other day.
We got near a garden, _________ owner sitting in it .