+
She can play the guitar
+
They can play volleyball
-
She can't sing
+
He can play the piano
+ (they)
They can to go a concert
+
He can cook
-
She can't ride a bike
-
He can't listen to music
+
He can ride a bike
?
Can they dance?
+
They can swim
-
He can't swim
?
Can she cook?
-
She can't play tennis
?
Can they play football?