She showed the visitors around the museum, the construction _____ had taken more than three years.
He behaved nothing had happened.
To our surprise, the missing suitcase ______, completely empty, near our office building the next morning.
A: Nancy doesn’t look very well. What’s wrong with her? B: She has a terrible headache because she ______ too long. She should stop to have a good rest.
Andy Lau is _______ a singer. He’s also a good actor in both movies and TV plays.
A: ______did the teacher give you much advice? B: How to study English.