After retirement, learning a musical instrument may be harder than ______ when you were a kid.

After retirement, learning a musical instrument may be harder than ______ when you were a kid.

1. A.
   it may
2. B.
   it was
3. C.
   it does
4. D.
   it did

After retirement, learning a musical instrument may be harder than ______ when you were a kid.

  A. it may                  B. it was                       C. it does                      D. it did

After retirement, learning a musical instrument may be harder than ______ when you were a kid.