—Where did you find our chemistry teacher? —It was in the lab ______ he was doing his experiment.
____ the terrible weather and the possible dangers ahead in the mountains, he insisted on going there alone.
He had been practicing his spoken English with the ____ of working as a volunteer for World Expo Shanghai and his dream finally came true.
If there is anything wrong with the sentence, please ____.
—Has Ham started out? He said he would join in the party. —He ____. He is a man who always keeps his word.
—Will you go to Mary’s birthday party? —No, ____ invited, I can’t go to it because I’ll be too busy then.