1)The test we did last time was more difficult than this one

→This text is not as difficult as the one we did last time.

2)there mistake in the account was not noticed until the figures were re-checked 

→It was not until the mistake in the accounts was noticed that the figures were re-checked.

3)I haven't met my grandparents for five years

→ I last met my grandparents five years ago.

4)"you'd better think carefully before applying for that job" she said to me

→She advise me to think carefully before applying for that job.

5)she read the reference books so she could finish the test (if) 

→If she reads the reference books, she will finish the test. 

6) I failed the university entrance.what's a pity

→I wish i had passed the university entrance.( wish)

cs j sai sót cho mnh xl 

(W)

=>

1. This test isn't as difficult as the test we did last time.

2. It was not until the figures were re-chcheed that the mistake in the account was noticed.

3. I last met my grandparents five years ago.

4. She advised me to think carefully before applying for that job.

5. If she hadn't read the reference books, she couldn't have finished the test.

6. I wish I hadn't failed the university entrance.