Lucy was very angry. She didn’t know what to say.（两句合并为一句）
Lucy was ________ angry ________ she didn’t know what to say.
So far scientists have done a lot of research on Mars successfully.（改为被动语态）
So far a lot of research on Mars ________ ________ done successfully by scientists.
The first guest to his restaurant can enjoy the meal without paying money.（保持句意基本不变）
The first guest to his restaurant can enjoy the meal ________ ________.
Our trip to Chongming Island last summer was unforgettable.（改为感叹句）
________ ________ our trip to Chongming Island last summer was!
It’s about twenty minutes’ drive from the airport to the railway station.（对划线部分提问）
________ ________ is it from the airport to the railway station?
Robert has sports every day.（改为否定句）
Robert ________ ________ sports every day.
