Răspuns:
1.It is essential to eat three times a day.
2.It would be useful to clean the room.
3.The outer covering of the earth is invisible.
4.Claiming to be right, I'll give you a ten.
5.I measure 1 meter and 40 centimeters.
6.In the counter- past I swallowed a penny.
7.This discussion is conventional.
