các bạn có thể giải thích giúp mình tại sao lại chia động từ như vậy được không(lời giải chi tiết nha)(có 1 số câu mình không làm được các bnj làm và giải thích luôn cho mình với nha)
1 Yesterday while I was attending in the park, Matthew......on the company's annual report.
A. was working
2. After the horse threw her to the ground for the third time, Jennifer picked herself up and said, "I ...on another horse as long as I live".
B. have never ridden
3 Ever since Maurice arrived, he.......quietly in the corner. Is something wrong?
A. sat B. has been sitting C. had been sitting D. with have sit
26. After Nancy.........for twenty minutes, she began to feel tired.
A. jogging B. had been jogging C. has been jogging D. has jogged
27. Peter, ......since you got home from football practice?
A. have you eaten B. will you eat C. are you eating D. do you eat