An excellent teacher is believed to be one who devotes (奉献) himself to the children but asks for nothing .
Mr. Zhang is mild in character. He never shouts__________ he is very angry.
With a lot of difficult problems____________ , the manager felt worried all the time.
--Well done, Jack !--Thanks. But given more time, I__________ it better.
Throughout the world__________advance has been made in science and technology is due to education which brings forth knowledge, creation and inventions.
--What made your father throw up last night?--I think the large quantities of wine __________.