问题
选择题
Allen followed his customer across the yard and stood on the step of the house, two shopping bags.
A．lifted
B．having lifted
C．to lift
D．lifting
答案
答案：D
考查非谓语动词。lifting 在这里做伴随状语，动作与位于动词同时发生。句意：艾伦跟着他的顾客穿过院子，站在房子的台阶上，拎着两个购物袋。所以选D。