---Look! Here comes our school bus.

---No hurry. Don't get on it ______ it has stopped.

1. A.
   until
2. B.
   after
3. C.
   since
4. D.
   when

– Look! Here comes our school bus.

-- No hurry. Don’t get on it ______it has stopped.

A. until                  B. after                         C. since                 D. when

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