Answer: B) Can
Explanation for this question is being written.
Answer: A) Can sleep.
Answer: A) Can
Answer: A) Was able to.
Answer: D) Can
Answer: C) Can do/ can't do.
Answer: C) He doesn't know how to ride a bike.
Answer: B) Couldn$^{'}$t
Answer: D) Cannot be controlled.
Answer: A) Could
Answer: C) Possibility
Answer: A) Can-ability
Answer: C) Can be achieved.
Answer: C) Can't
Answer: A) Couldn't-can
Answer: B) Can't
Answer: B) Could
Answer: B) Be able to see.
Answer: C) Could
Answer: C) Couldn't
Answer: B) Wasn't able to.
Answer: C) Can
Answer: A) Be able to.
Answer: B) Don'ts
Answer: A) Can shows general present ability; could shows past or polite possibility; be able to can express ability in any tense.
Answer: C) You can't park here.
Answer: A) Can't/will
Answer: A) Can't
Answer: A) Can enjoy.
Answer: A) Yes, she could.
Answer: A) My teacher can help me after school.
Answer: A) Can / can.
Answer: B) CAN
Answer: D) Will be able to.
Answer: A) Can take.
Answer: A) Could see.
Answer: A) You could do better than you think.