As we have planned, we’ll go to Beijing to attend her sister’s wedding party. We’ll also visit our mother school _______we go there.

 A. unless B. when C. once D. even if

As we have planned, we’ll go to Beijing to attend her sister's wedding party. We'll also visit our mother school _____ we go there.  

 A. unless  B. when  C. once  D. even if

As we have planned, we’ll go to Beijing to attend her sister’s wedding party. We’ll also visit our mother school _______we go there.

 A. unless             B. when           C. once           D. even if

As we have planned, we’ll go to Beijing to attend her sister’s wedding party. We’ll also visit our mother school _______we go there.

1. A.
   unless
2. B.
   when
3. C.
   once
4. D.
   even if

As we have planned, we'll go to Beijing to attend her sister's wedding party. We'll also visit our mother school _______ we go there.

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