Answer:
i. shift listlessly
ii. one bumps into my toe
Explanation:
Careening refers to swift and quick movement which can be uncontrollable.
The above answers actually helps the reader to to understand the word, careening.
→ "shift tirelessly" gives us understanding of "careening" because it actually tells us how one is moving (shifting) in a tired manner.
→ "one bumps into my toe" also gives an understanding of "careening". Bumping into someone is a kind of sudden movement which takes place without the person input in controlling it.
The above are the two correct phrases.
