Meaning

1.slightly unwell or in low spirits.

2.Raining heavily

3.good luck

4.very happy

5.every easy

6.to achieve two things by doing a single action 

7.used to say that it is necessary to suffer or work hard in order to succeed or make progress.

8.go to bed

Sentence

1.Margo feels under the weather .

2.It is raining cats and dogs today .

3.My mom always says break a leg when im in a competition .

4.Im feeling on cloud nine today.

5.The test was a piece of cake .

6.Whenever I jog, I like listening to English rap music. That way, I kill two birds with one stone.

7.am going to the gym twice a day and all my muscles ache, but you know what they say, no pain no gain.

8.My baby sitter always say hit the sack when its 8:30pm.

Explanation:

Hope it helps:)