30. In line 8, the word "certain" could best be replaced by which of the following? (A) some (B) sure (C) confident (D) positive

I.VocabularyThere are fiften questions in this partof the test. For each question, there are four choices marked ( A ), ( B ), ( C ), and ( D ). Decide which ONE is closest in meäning to the umderlined word or phrase.1. The patient was relieved when her regular checkup turned our all right.(A) surprised(C) pleased(B) shocked(D) puzzled