1. They/ play/ tennis/ 10.30 yesterday morning. 
=> They were playing tennis at 10.30 yesterday morning. 
2. Ann/ do/ homework/ 5 o;clock this afternoon. 
=> Ann was doing homework at 5 o'clock this afternoon. 
3. My father/ wash/ car/ from five to six. 
=> My father was washing his car from five to six. 
4. This time last year/ we/ live/ France. 
=> This time last year we lived in France. 
5. The student/ offer/ flowers/ this visitors. 
Câu này sai ở chỗ "this visiters" vậy phải làm theo 1 trong 2 cách sau đây: 
a) This student offered flowers to the visiters. 
b) The student offered flowers to this visiter. 
6. I / cook / dinner/ half an hour ago. 
=> I cooked dinner half an hour ago. 
7. She/ work/ the studio/ that time. 
=> She was working at the studio that time. 
8. What/ you/ do/ from 3 to 6 yesterday afternoon? 
=> What were you doing from 3 to 6 yasterday afternoon?
9.I / write/ my report/ 8. o’clock/ last night/.
=> I was writing my report at 8 o'clock last night.