问题
选择题
The teacher is writing ____ a piece of chalk on the blackboard while the students are writing ____ink in exercise books.
A．with, in
B．in, with
C．in, in
D．with, with
答案
答案：A
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The teacher is writing ____ a piece of chalk on the blackboard while the students are writing ____ink in exercise books.
A．with, in
B．in, with
C．in, in
D．with, with
答案：A