-Where did you put the car keys?-Oh, I ______ I put them on the chair because the phone rang as I _______ in.
Why didn't you tell me there was no meeting today? Iall the way here through the heavy snow.
The old man, _______ abroad for twenty years , is on the way back to his motherland.
Zheng He’s first stop during the expedition was in _______ is a part of Vietnam today.
People believe that mutual understanding _______ a happy marriage.
Lang Ping, who is said to have started her coaching career in Turkey, volleyball in China for almost twenty years.