By 8pm, I …………………………………………… the Simpsons marathon for 12 hours. (have)

2 câu trả lời

By 8pm, I …………………………………………… the Simpsons marathon for 12 hours. (have)

=> had had 

thì quá khứ hoàn thành

Đáp án: had had 

`-` Vì "By 8 pm" là DHNB thì QKHT, cấu trúc: S + had + Vp.p + ...