Question

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

Answer 1

a. is able to
b. are not able to
c. is not able to
d. was able to
e. wasn't able to 
f. are able to
g. is not able to
h. weren't able to