Question

【题目】I am delighted___as chairman of the students’ union last winter

A.to appoint

B.to be appointed

C.to have appointed

D.to have been appointed

Answer 1

【答案】D

【解析】句意：我很高兴去年被任命为学生会主席。be delighted to do sth.意为“很高兴做某事”；appoint sb. as…意为“把……任命为”。根据句意可知应该用不定式的被动语态并且要用不定式的完成时表示过去的动作。