________ THE END OF THE COURSE, THE STUDENTS HAVE TO TAKE AN EXAM O...

51. - ĐỀ CƯƠNG ON HK 1 LOP 12(KEYS)
ĐỀ CƯƠNG ON HK 1 LOP 12(KEYS)
51.________ the end of the course, the students have to take an exam on four basic skills of the target language. A. In B. At C. On D. To