The great millionaire gave away all his fortune to the charity and lived a simple life，________.

No one had told Smith about __________ a lecture the following day．

Did your classmate accept your invitation?—No, he ____ refused

Don’t defend him any more. It’s obvious that he ________ destroyed the fence of the garden even without an apology.

However, at times this balance in nature is disturbed by human activities, _______ a number of possibly unforeseen effects.