21. —Let’s go Dutch for this supper, OK?
— No, _______ this time, as a reward for all your help.
A. it’s up to you B. it's my treat
C. let’s talk about it D. it doesn’t matter
22. Wouldn’t it be _______ wonderful world if all nations lived in _______ peace with one another?
A. a, the B. the, the C. a, / D. the, /
