HE HAS JUST TAKEN AN EXAMINATION…….CHEMISTRY.A. ON B. IN C. F...

câu 25. - DE THI KIEM TRA KIEN THUC GIAO VIEN
DE THI KIEM TRA KIEN THUC GIAO VIEN
Câu 25. He has just taken an examination…….chemistry.A. on B. in C. for D. about