The theory he ____ about black hole isn’t understood by most of people.A .put up B put down C put off D put forward
Wang Ping hesitated for ___ before he ___ to the question.
--Hello, May I speak to Mr. Wang, please? ----______
They are ___ the same size. You can take ___ half of the bread.
The book ___ three yuan, but it only ___ me two yuan.
The building is ___.