问题描述：
I spent the whole day ( )in my study.
In order not to be disturbed ,I spent the whole day ( )in my study.
A locked
B locking
不能用B 理解成 spend sth （in） doing
In order not to be disturbed ,I spent the whole day ( )in my study.
A locked
B locking
不能用B 理解成 spend sth （in） doing
问题解答：
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