21.--Do you mind if I record your lecture?
-- ___________. Go ahead.
A. Never mind B. Not at all C. No way D. No. You’d better not
22. ---The streets become more and more crowded since most families own cars in my city.
--- It is true _______ my hometown.
A. with B. to C. in D. of
23. My learning method is quite different from ________ of my brother.
A. it B. the ones C. that D. one
