----- Nội dung dịch tự động từ ảnh ----- 20.She has to do these exercises 21.Is Marry cutting the cake with a sharp knife. 22. They didn't have to look after the children properly. 23.The chief engineer wasn't instructing all the workers of the plant. 24.Do they have to repair the engine of the car? 25.He didn't use to borrow my pen. 26. Bring along with a map! 27.He advised doing excercises regularly 28.He advised me to do all the homework 29.Who wrote this book? 30.Jack suggested playing chess 31.A man I know told me about it. 32.It's impossible to finish this work before 9. 33.They decided to sell the house 34.It's his duty to lock all the doors 35.Nam will continue to use that car 36.It's difficult for me to finish this test in an hour. 37.I saw him climbing over the wall 38.My friend gave me a present on my birthday 39.IT's unecessary for you to type this letter. 40.I like you wearing this dress