Resposta :
Oi, tudo bem?
a) She can sing at the party - she can't sing at the party
b) You could help me - You couldn't help me
c) You can speak russian - You can't speak russian
d) You could take my bags - You couldn't take my bags
e) You could hear me for a moment - You couldn't hear me for a moment
f) She could speak chinese - She couldn't speak chinese
Espero ter ajudado! Bons estudos <3