With the _______ of the new album “Second Round”, May Day is now touring in major cities on the Chinese mainland, including Beijing, Shanghai and Chengdu.

The system has been designed to give students quick and easy        to the digital resources of the library .

Due to the widespread________ of this medical technology, more diseases can be discovered and treated at an early stage.

Teachers have to constantly update their knowledge in order to maintain their professional ___.

 We won't know whether it will be successful. We won't know whether there will be good _____.