We have a high regard for Mr. Black because he always tries to his principles.
A. live up to
B. look forward to
C. catch up with
D. put up with
网友回答
(答案→)A. live up to
B. look forward to
C. catch up with
D. put up with
解析：本题考查动词短语。 句意：我们十分尊重Mr. Black，因为他总是信守原则。live up to 意为“遵守，实践（诺言，原则）”。