经济运行是指各种经济主体利用各种( )进行生产、流通、分配、消费等经济活动的过程。
A．生产资料
B．服务资料
C．物资资料
D．生产要素
参考答案：D
He didn't get the best result in the examination, though he worked _______ in his class.[ ]
A. hard
B. harder
C. hardest
D. hardly
句型转换。
1. He runs every morning. (改为现在进行时)
He ______ ______ now.
2. Jack does his homework in the evening. (改为现在进行时)
Jack ______ ______ his homework.
3. We are talking in the zoo . (就画线部分提问)
______ ______ you ______ ?
4. We are drawing pictures in the park? (就画线部分提问)
______ ______ you ______ in the park?
