Câu hỏi: Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
I have earned my own living _______ .
A. since I was seven
B. when I was seven
C. while I was seven
D. as soon as I was seven
I have earned my own living _______ .
A. since I was seven
B. when I was seven
C. while I was seven
D. as soon as I was seven
Kiến thức về mệnh đề trạng ngữ chỉ thời gian
S + have/ has + V(p2) + St since + S + V (qk) + ST
S + have/ has + V(p2) + St since + S + V (qk) + ST
Đáp án A.