1. a) I found myself much better prepared to stand than to sit down.
b) I found myself much better prepared to stand than I was prepared to sit down.
B) is clumsy and too long for me, though it isn't wrong, but a) is less wordy.
c) It is easier to say than do
d) it is easier to say than to do
You could use either
2 Balls are objects as much as books are.
3- Again, I'd use the shorter one
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