初中英语语法问题！！
1. The secretary entered the office, ( ) some letters in her hand.
A. with B. for C. by D. about
2. One-off plastic lunch boxes are not allowed ( ) now.
A. using B. to use C. to be used D. using
参考答案:1.A with表示带有,伴随的意思
2.B allow sb. to do sth.的被动语态