－did you play the piano today－For five hours.

Did you see the manager in his office?—Yes, he ______ by the journalist from Chengdu Evening

When he came back from abroad, Joan told us about the cities and the people ______ he had visited.

In face of failure for the moment ,it’s the most important to_____a good state of mind.

f there is no scientific proof secondhandsmoke causes cancer, there is no reason why nonsmokers should be forced to takethis risk.