câu đó a ko hiểu đề lắm

1. activities

2. differences

3. unfriendly

4. hospitality

1. painting

2. gardening

3. club

4. playing

5. dislikes

6. hobby

S + Ved/V2, when S + was/ were + V-ing

were crossing nha   nhầm tí

1. is

2. is

3. has

4. is

5. has

6. are

7. is

8. is

1. As we crossed the street, she began to sing a song.

2. When we got to the stadium, the matches had already begun.

3. Last night, after they had gone, I turned up there.

4. She will have worked for that company for ten years by next month.

6. My husband and I both go out to work, so we share the household chores.

7. She shows a willingness to work on her own initiative.

9. After Linda had failed the second attempt, she lost all her confidence.

13. This is a useful reference book, particularly for soil chemists and biologists.

15. It would be irresponsible to ignore warnings.

17. It's the first time I've seen that man here.