hello, i have just taken the test. your answer for part A would be ''the bird would rather fly free'' and for part B it would be ''for he must fly back to his perch and cling''. hope this isnt too late :^
Answer:
1. Can
2. might
3. can
4. would
5. must
6. must
7. would
8. Would
9. must
I believe your answer is A. Yearn.
Hope this helps! <3