. The _____ look on his face suggested that it was he who had broken into the house.

The house was sold for $60,000, which was far more than its real ____.

The　manager　spoke　highly　of　such＿＿as　loyalty，courage　and　truthfulness　shown　by　his　employees．

If you play with electricity，you may get an electric________.

Having lived in China for 8 years, Helen has a good ______ of both English and Chinese．