21. Mr. Smith owns _____collection of coins than anyone else I have ever met.

A. larger          B. a larger            C. the larger           D. a large

22. — Do you want tea or coffee?

—______. I really don't mind.

A. None                B. Neither                    C. Either                       D. All

23. _______was most important to her, she told me, was her family.

A. It           B. This           C. What        D. As