It’s very kind _______ you to take the sick boy to thehospital.

下列有关文学常识的表述，不正确的一项是

The crossing was blocked by many trucks andbuses, made itimpossible for us to go to work on time.

________ several times，but he still doesn’t know how to do it correctly

His father ________ in Beijing now. Last year he ________ in Dalian.