Answer:
Intonation:
¿Manos a la obra?
Tag Questions:
Manos a la obra, ¿no?
Explanation:
First one is an intonation as there is a pitch in the statement
Second is a tag question therefore using ¿no? at the end
Cincuenta is 50..and veinte is 20. When you add them together, they add up to 70. So, the answer is setenta.
Tener que hacer
The Dad insisted the children what they have to do for homework