When I turned to Tony for help, I found that the more he tried to explain, ___________.

There are three ______ students on the playground.

When did the great earthquake in Wenchuan happen? — It happened ______ 2:28 ______ the afternoon of May 12, 2008. [ ]

I don’t know the answer. Maybe you could ask _______.

It’s very important for us to learn how to learn by .