Answer:
1) They want to sit on the grass.
2) They want to get those plants.
3) They want to go to the mountains.
4) They want to walk in the forests.
5) They want to limb the mountains.
6) They want to go to the ponds.
7) We want to see the barns.
8) We like to see to the summer skies.
9) They like the new dog houses.
10) The girls are in the backyards.
11) Little boys are in the front yards.
12) They want to buy house plants.
13) Lets go to the waterfalls.
Explanation:
Just easily change the singular into plurals.
