30. Only those who have experienced hardship ____ well aware of what happiness means.
.At the ceremony, the president delivered a thank-you speech _____ the company.
--- What time is it?--- I have no idea. But just a minute, I ______ it for you.
The video games the boy was quite fond of _____ him so much pleasure during his childhood.
— How beautiful the dress looks ____ you! Don’t you want _____, Madam?— Please show me _______.
The best moment for the football star was _______ he scored the winning goal.