1. At that time, I would never be more lonely than when I was alone.

At that time, I felt lonely as never before.

No one will know.

No one will find out.

The truth is at the bottom of the bottle.

The heart is seen in wine.

Don't tell him the truth.

Don't tell him the cruel truth.

Oxford English Dictionary is the court of final appeal for all matters related to English words.

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6. One or two jewels will never be lost.

Those necklaces will not be lost.

I know he is serious.

I know he is serious this time.

This failure is the reason for his success.

This failure contributed to his success.

9. He never recovered her loss.

He never recovered her loss.

10. I need more leisure time.

I have more time to relax.

1 1. She is in a delicate state now.

She is pregnant now.

12. The speaker won the support of the audience.

13. General Smith and my father are called by their first names.

General Smith and my father are brothers.

14. The grey mare is a better horse.

Metaphor dominates the husband's wife; Men are afraid of their wives.

15. How much deposit do you have to pay for this car?

How much did you pay in cash for this car?

16. The rich and the poor are sitting next to each other in the audience.

The rich and the poor sat next to each other in the audience.

17. Lift your chin.

Hold your head high.

18. The wind blows to the south.

19. There is no life on the island.

There is no life on the island.

20. A drowning man grabbed at a straw.

A drowning man will catch at a straw.

There are two sentences that I am not sure are correct, so I will not write them. ...

I hope it helps you. ...