I order not to be disturbed, I spent three hours in my study. A. locking B. lock
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I order not to be disturbed, I spent three hours ___ in my study.
A. locking B. locked C. to lock D. being locked
试题答案
B

I order not to be disturbed, I spent three hours ___ in my study.
A. locking B. locked C. to lock D. being locked
B