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In 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

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

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

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

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

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

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

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

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

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

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