read the following sentences and change can, can t could or couldn t with the correct form off BE ABLE TO .

a) He could play the guitar -----------
b) Ron and Dan can t speak English ------------
c) Mary can t keep a secret ----------
d) My uncle could ski when he was young -----------
e) George couldn t swim when he was a teenager.-----------
f) Mary and I can play the drums ----------
g) Ursula can t write essays --------
h) Sandra and Paula couldn t speak Japanese when they first arrived in Japan