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I won’t call you, ________ something unexpected happens.

   A. unless       B. whether         C. because         D. while

I won’t call you, ________ something unexpected happens.

   A. unless       B. whether         C. because         D. while

I won’t call you, __________ something unexpected happens.

A. unless   B. whether   C. because   D. while

.I won’t call you, __________ something unexpected happens.

A. unless B. whether

C. because      D. while

 I won’t call you, ________ something unexpected happens.

   A. unless       B. whether         C. because         D. while

 I won’t call you ______ something unexpected happens.

A. unless        B. whether        C. because         D. while

I won’t call you, ________ something unexpected happens.

   A. unless       B. whether         C. because         D. while

 I won’t call you, ________ something unexpected happens.

   A. unless       B. whether         C. because         D. while

 I won’t call you, ________ something unexpected happens.

   A. unless       B. whether         C. because         D. while

I won’t call you, ___________ something unexpected happens.

    A. unless       B. whether         C. because         D. while