chon cau sai: 1. it was an extremely frightened experience in my life a.It was b. extremely c. frightened d.in 2 . Mark went on working despite he felt unwell a. went on b. working c. despite d.felt 3. Frank is usually swimming before work,but this morning he is jogging a. is usually swimming b. work c. but d. is jogging 4. One when I was ten. I used to get sick and went to the hospital a. when b. was c. I used to get d. went 5.As soon as the alarm clock had gone off, she woke up and go out of bed a. as soon b. had gone off c. woke up d. go out of 6. all the children have been returned safe to their parents a. all the b. have been returned c. safe d. to 7. I know you're too busy to stay, but I look forward to see you again a. too busy b. to stay c. I look forward d. to see 8. Have you forgotten to lock the back door frequently? a. have b. forgotten c. to lock d. frequently 9.Ilike lying on the beach, so I always spend my holiday to sunbath a. lying b. the beach c. always d. to sunbath 10. The bank lent us money for a down payment, so now we owned the house we used to rent a. lent b. for a down payment c. owned d. used to rent Pleaseee!!