35: Nam Started doing his homework 2 hours ago
=> Nam____________________________________________
36: They have never bought such expensive clothes before
=> This is___________________________________________
37: I began to work for this company in 2000
=> I_________________________________________________
38: Learing English is not difficult
=> It is______________________________________________
39: I spent 2 hours reading books yesterday
=> I took ___________________________________________
40: This is the first time they have attended this course
=> They_____________________________________________
35,Nam has done his homework for 2 hours
36,This is the most expensive clothes they have ever bought
37,I have worked for this company since 2000
38,It is not difficult to learn English
39,I took me 2 hours to read books yesterday
40,They have never attended this course before
#học_giỏi
35: Nam Started doing his homework 2 hours ago
=> Nam have done his homework for 2 hours
36: They have never bought such expensive clothes before
=> this is the first time they have bought such expensive clothes before
37: I began to work for this company in 2000
=> This company have worked since 2000
38: Learing English is not difficult
=> It is not difficult to learn English
39: I spent 2 hours reading books yesterday
=> I took me 2 hours to read books yesterday
40: This is the first time they have attended this course
=> they have never attended this course before