Question

Have they found a solution yet?
Yes, they___
a) have.
b) found.
c) have found.
d) found it yet.
d) have found it yet.

Answer 1

Yes, they have.
opição b.

espero ter ajudado;

lul.

Answer 2

Resposta: Have found (Certa e formal) e Have (Certa porém informal).

Nesse caso seria a letra C pois é a mais formal