MR. KHANG HAS TAUGHT ENGLISH ………. 1999.A. FOR B. ALREADY C. SINCE...

10. - BÀI GIẢNG KIEM TRA 15'''' ANH9
BÀI GIẢNG KIEM TRA 15'''' ANH9

10. Mr. khang has taught English ………. 1999.

A. for

B. already

C. since

D. yet