With economy developing at great speed, our city has _____ quite a few changes in recent years

I prefer to work here because salaries are higher herethan ______in my country

下列各句中划线的成语能被括号中的成语替换且符合句意的一项是

The engineers are so busy that they have no time for outdoor sports activities，________ they have the interest

Remember to print on both sides of the paper.—__________.