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 + ...