— Do you know the old man ______ on the bench over there?— He is my grandfather.

Those children don’t have to ____________ learn , for they always work hard voluntarily.

In April, 2009, President Hu inspected the warships in Qingdao,    the 60th anniversary of the founding of the PLA Navy. 

        with the size of the whole earth , the biggest ocean does not seem big at all .

 _________ himself with confidence, the young man went to the manager’s office bravely.