The twin towers fell down. It looked_____ a huge piece of chocolate had been melted down(溶化).
It was five hours _____ the French climber reached the top of the world’s tallest building.
He must have been annoyed by something yesterday, _____?
Children _____ to difficult situations are better at handling those _____ tasks.
---Are you happy with this lab? ---Not a little. We can’t have _______.
What kind of things do people often buy during _____ Christmas and _____ Spring Festival?