Im sorry but this is a whole project, maybe try to do your best on it.
Answer:
10. tienen
11. venimos
12.tienes
13.vienes
15.tiene
16. viene
17.tenemos
im pretty sure its like this-
Estbamos because you guys were in the beach.
Hope I have helped.
Answer:
for 18 you can put "hambre"
Explanation:
for 20 you can put "miró"