I HAVE DONE VOLUNTARY WORK FOR THREE YEARS.A. I STARTED DONE VOLUN...

39. - ĐỀ KIỂM TRA GIỮA KÌ I MÔN: TIẾNG ANH
Tiếng Anh ĐỀ KIỂM TRA GIỮA KÌ I MÔN: TIẾNG ANH
39. I have done voluntary work for three years.A. I started done voluntary work for three years.B. I started doing voluntary work for three years.C. I started done voluntary work three years ago.D. I started doing voluntary work three years ago.