customary

• usual
• tirelessly

elegant

• to surprise very much
• graceful; rich and fine in quality

belatedly

• usual
• late; tardily

unwearyingly

• steadily; tirelessly
• to surprise very much

reproach

• late
• blame; express disapproval or disappointment

astonishment

• usual
• to surprise very much

To my _________, the front door was wide open when I got home from school.

• elegant
• astonishment

My brother wasn't happy when I _______ wished him a "Happy Birthday".

• belatedly
• reproach

My niece looked very _______ dancing during the ballet performance.

• elegant
• steadily

"Why do you __________ me for everything?" I asked my mom when she shouted at me about the mess in the kitchen.

• customary
• reproach