实践是人们改造客观世界的物质性活动,它具有以下特点 ①客观物质性 ②主观能动性 ③客观实在性 ④社会历史性
Scott found_________ difficult to solve the problem.
She asked her teacher_________.
Don’t ________ away the dirty coat before________ me a clean one.
—Eric, no talking in class! —Sorry, I _______ next time.
The man sat ________ the bus, because he is the driver.