问题
单项选择题
Each carton is lined ______ a polythene sheet and secured by over all strapping.
A．by
B．in
C．with
D．within
答案
参考答案：C
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Each carton is lined ______ a polythene sheet and secured by over all strapping.
A．by
B．in
C．with
D．within
参考答案：C