1 . many trees are cut down to make paper

they ............................................................

2. she cleaned the house . then she went to the market
after ............................................................
3. what about going to Dam Sen park 
why .............................................................
4. richard can cook very well
richard is a ..................................................
5. mr.Nam is the owner of this house
mr.Nam is belong ........................................
6. the Red river is 1,149 km long . the Nile river is 6,650 km long
the the Nile river is much ............................
7. the children like to watch dragon dance in the strees at Tet 
the children enjoy .......................................
8. phong was sleepy , but he still stayed up late to watch the end of the game on tv
although ......................................................
9. our resources of energy will soon end because we don't try to save it
If .................................................................
10. she likes to live in the countryside
she enjoy ....................................................