Whenever Steve sang in the shower, his voice _______ throughout the house

The parents are _____ their son who has been away from home for days.

He ______ would do great thins should notattempt them all alone.

I could ____ he was surprised from theexpression on his face．

当你帮助别人后，别人对你说＂Thank you.＂时，你应该说 ____________。