There are several landladies approved by the universities who take in _____.

John has great singing _____________, but to become a real singer, he needs a lot of necessary training and practice.

She made a silly mistake because she hadn’t kept her       on her work.

 People often want their life to go perfectly, but accept the         that nothing on the earth is flawless.

 The ___of North Korea and South Korea is getting worse and worse these days.