21.—What about _____ supper yesterday?
—Well, _____ very delicious one indeed.
A. /; the B. /; a C. the; the D. the; a
22.— I just don’t know how to use the word “otherwise”.
— Well, I guess it will be of help if you __________ the dictionary.
A. look up B. check in C. refer to D. search for
