To make members of a team perform better, the trainer first of all has to know their ______ and weaknesses.

Beyond, a famous rock band, played its last concert in 2005 and then it officially ______ in Singapore.

 When the question _____ at the meeting, no one could answer it.

open

Making great efforts to struggle hard in your study，if ______，will possibly lead to your great success in the college entrance exam next year.