Happiness

The climate is  ​ (a)   today (fairly warm)  

In fact, older people are more consistently satisfied with their lives than the young. And they’re less ​ (a)   (likely) to dark moods

The climate issue is the most ​ (a)   topic on today's agenda (most important) 

The sale items are arranged in ​ (a)   order according to price, i.e. the most expensive one comes first. (going down) 

I'm Mr. Smith and this is my ​ (a)   , Mrs. Smith (wife) 

Please ​ (a)     your introduction, it needs more to it. (develop) 

If you feel dizzy or ​ (a)   , please rest.  (weak)

He made an absolute ​ (a)     attempt to fix the problem, that was a waste of time.

Narcissism is the opposite of ​ (a)    

a ​ (a)   (new) survey by the Centers for Disease Control and Prevention found that people ages 20 to 24 are sad for an average of 3.4 days a month