—        butter did you put in the soup?   —One spoon.

 Study hard,      you’re sure to have a good result in the exam!

“There were a thousand other fruits which Adam and Eve could eat, but this one was forbidden.” What does the underlined（划线的） word mean?

Anna is going on a tour of Xi’an, and she wants to _____Chinese history.

 It worries our government a lot that the air in our city is _______than it used to be.