Question 10: Although the staff did expand somewhat for the first centuiy of its existence the entire teaching staff consisted of the president and three or four tutors.

A. to and fro                      B. back and forth               C. side by side                   D. more or less

1000 câu khó mục tiều 9+ Tiếng anh ôn Tốt nghiệp THPT Quốc Gia (Lesson 7)