21 In order to get ________ better job of the two, he claimed that he could speak _________second language, hoping it was _________ advantage over the other applicants.
A. the; a; an B. a; a; the C. the; the; 不填 D. a; the; an
22. It is uncertain _______ side effect the medicine will bring about, although about two thousand patients have taken it.
A. that B. whether C. if D. what
