There is no in trying to persuade him to change his mind, for he never follows the advice of others.
It is widely believed that an apple which fell from its branches were the _______ for Newton’s discovery of gravity.
Raising _______ retirement age in progressive steps is in _____ line with China’s labor market realities and should be prioritized, an official said Tuesday.
It was not until 1911, _______ the first vitamin was identified, _______ people realized the importance of it.
We should think carefully about ______ Mr. Needham said at the meeting.
Have you ever met with this case in your life you can't understand others even if they have said something several times?