HE IS VERY WORRIED _______ HIS NEW JOB BECAUSE HE IS NOT QUITE PRE...

Lớp 12 Tiếng Anh Bài tập tiếng anh lớp 12 theo chuyên đề

12. He is very worried _______ his new job because he is not quite prepared _______ working.a. on / over b. to / off c. about / for d. in / at