1.I will not be able to go to the art exhibit with you tonight because I'm under the weather.

-Under the weather : có chút không khoẻ

2.I may not have my problem solved but at least I know I'm on the right track.

-On the right/wrong track : đi đúng/sai hướng

5.The exam was a piece of cake and I made no mistake.

-A piece of cake : rất dễ

7.He can't come to terms with the fact that he will never race again.

-Come to terms : chấp nhận

9.The cafe was in a mess and we had to do it up.

-Do sth up : sửa, trang trí lại cái gì

10.The last day of the holiday ended in disaster.

-Ended in/with sth : kết thúc trong...

1. I will not be able to go to the art exhibit with you tonight because I'm under the weather

Under the weather: không khỏe

2. I may not have my problem solved but at least I know I'm on the right track

On the right track: theo đúng hướng

5. The exam was a piece of cake and I made no mistake

A piece of cake: rất dễ dàng

7. The fact that he will never race again is something he cannot come to terms with

Come to terms with: Chấp nhận, làm quen

9. The cafe was in amess and we had to do it up

Do sth up: trang trí

10. The last day of the holiday ended in disaster

End in + N