Ⅰ.语法填空
阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
I was on my way to my parents' on my motorcycle.And suddenly I saw a middle aged man 1.________ (carry) a heavy sack on his shoulders and walking with great struggle.I passed him，then paused，and turned around to stop near him and 2.________ (offer) him a ride.
