Janie has a big heart, she received a big box of candy for Valentine's Day and shared it with her brothers and sisters. To 'have a big heart' means to ​ (a)  

Sim appeared to be cold-hearted, he pushed his three-year-old brother down and caused him to cut his knee wide open and then said, "go cry to Mama you lil brat"! 'Cold-hearted' means to ​ (a)  

When Fred's girlfriend broke up with him, everyone knew how extremely sad he was because he was wearing his heart on his sleeve. To 'wear your heart on your sleeve' means ​ (a)   ​

I wasn't sure whether or not to tell Sal my big secret because I was afraid he'd say something to my friends but he crossed his heart and hoped to die. 'Cross your heart and hope to die' means ​ (a)  

I cried my heart out when my dog died. 'Cry your heart out' means ​ (a)  

Emma said, 'When you see my gorgeous prom dress, you're going to eat your heart out". To 'eat your heart out means ​ (a)  

From the bottom of my heart, I promise not to tell my brother that you have a crush on him. 'From the bottom of my heart' means ​ (a)  

I told Sam, 'I've had a change of heart about going with you to the dance". To 'have a change of heart' means to ​ (a)  

I had my heart in my mouth as I started to walk up on the stage to give my speech. To 'have your heart in your mouth' means ​ (a)  

I really had my heart set on getting a new phone for Christmas.​ 'To have your heart set on something' means ​ (a)  

To know my Dad was getting out of the hospital really set my heart at rest. To 'set your heart at rest' means ​ (a)  

Maria is extremely soft-hearted which isn't always a good thing. To be 'soft-hearted' means ​ (a)  

I really took it to heart when Tara, my friend since 3rd grade, ignored me continuously in high school. To 'take something to heart' means ​ (a)