精品文档---下载后可任意编辑一、单选。( )1. As a student , you must be careful ________your homework.A. of B. to C. with ( )2. Children should talk their parents.A. to B. of C. about ( )3. Look! So many people are getting _______ the bus. A. up B. on C. of ( )4. Can I use _______ boo...

时间:2025-03-02 10:08栏目:行业资料