a. Could you read when you were five years old? No, I can't
b. Doris is from Austria so she must speak German, but she can't speak French.
c. They can't drive, but they want to learn.
d. Sarah could ride a motorbike when she was twelve, and now she can also fly her father’s airplane.
e.My son couldn't speak until he was three years old. (хз ту только так подходит, по другому как-то неграмотно и нелогично)
f. I could dance before, but now I can't. I’m too old.
g. Her eyes are really weak. She can read the headlines, but she can't read the small print.
Объяснение: