----- Nội dung dịch tự động từ ảnh ----- The students A. were mopping B. mop the floor when the headmistress came in. C. have mopped D. are mopping Question 2. The workers of this factory A. had stopped B. stopped Question 3. Mary will go to the theatre A. after her roommate had returned C. when her roommate returns C. stop working since the pandemic broke out. D. have ANG B. before her roommate returned D. as soon as her roommate returned Question 4. An will have taught in this primary school for 3 years A. when she turned 30 C. by the time she turns 30 Question 5. Only after Nam calculator. B. had got B. once she turned 30 D. after she had turned 30 the exam room did he realise that he had forgotten to bring his A. gets Question 6. Since Lan moved to Paris, I A. didn't hear B. haven't heard Question 7. Ms. Hanh will have made a A. before he got home from school C. until he got home from school Question 8. While Ms. Nhung was A. heard B. has heard Question 9. Not until Trang Question 10. Phillips accidentally C. has got D. was getting anything from her. C. don't hear birthday cake for her son D. wasn't hearing B. as soon as he got home from school D. by the time he gets home from school teaching in Class 4B, she, C. was hearing a piercing scream outside. D. had heard the labour market was she aware of the importance of learning D. is entering his mother's favourite coffee cup yesterday morning. C. breaks D. broke English. A. enters B. has entered C. had entered A. had broken B. has broken Question 11. She fully A. understands Question 12. They A. were repairing the question after she had read the explanation. B. understood C. has understood D. will understand the washing machine when I returned home. C. would repair D. have repaired B. repair Question 13. Mai will redecorate her bedroom A. as Tet holiday approaches C. when Tet holiday was approaching B. since Tet holiday approached D. before Tet holiday approached