we have enough evidence, we can’t win the case

Is it the country ________ you studied ________ you are going to visit next week?

If there are _________cars, there will be _________air pollution. —Yes. And the air will be cleaner.

the third time that Li Ming has been to Xi’an , _______

下列各组句子中，划线词的含义相同的一项是（ ）