I order not to be disturbed, I spent three hours ___ in my study.

A. locking          B. locked         C. to lock        D. being locked

I order not to be disturbed, I spent three hours ___ in my study.

  A. locking          B. locked         C. to lock        D. being locked

I order not to be disturbed, I spent three hours ___ in my study.

A. locking　　　　 B. locked　　　　 C. to lock　　　 D. being locked

I order not to be disturbed, I spent three hours ___ in my study.

 A. locking        B. locked       C. to lock      D. being locked

In order not to be disturbed, I spent three hours______in my study.

A.locking 　 B.locked 　 C.to lock 　 D.being locked