—What delicious bread!—That’s right. It will taste ________with butter.

 –You should be _______ careful when you take the chemistry exam.--I agree. In this way, I will make _______ mistakes.

 --- Is your sister as serious as you? --- No, she isn’t. She is           .

Now the air in Yancheng is           than it used to be. Something must be done to stop it.

Everything is getting                .