問題詳情
48. Our esteemed professor known for his groundbreaking work
in quantum physics, is currently _____ sabbatical leave,
immersing himself in an array of research projects and
academic collaborations spanning continents.
(A) at
(B) on
(C) of
(D) in
參考答案
答案：B
統計：A:10,B:11,C:4,D:6,E:0
難度：困難