The train leaves at 6:00 p.m.So I have to be at the station ___5:40 p.mat the lastest

Charles is believed_______ the floor yesterday; he is always helping others silently.

I have told them withcertaintythere’ll be no change of policy.

The famous scientist grew up _______ he was born and in 1950 he came to Nanjing .

When she heard the strange news, a ___ look ___ in her face.