选填恰当的单词填入空格中,适当改变形式。 6. Nothing in a happy marriage can replace the___________ love for each other. 7. While the largest bankruptcy is despair, the greatest ___________ is hope 8. His wisdom lies in knowing how to hold fast to what is___________ to him. 9. Granted that he is not brilliant, he is at least ___________ and works hard. 10. His achievement rests with his ability to _________ himself to new surroundings. 备选单词: beneficial, asset, earnest, adjust, competent