Don't be afraid of asking for information ________ it is needed.

1. A.
   when
2. B.
   after
3. C.
   although
4. D.
   unless

Don’t be afraid of making any _________ when you speak English.

A. troubles????????? ????????????? ????????????? B. mistakes????? ????????????? ????????????? ????????????? C. progress

Don’t be afraid of asking for information ______it is needed.

A. when     B. after      C. although      D. unless

 Don’t be afraid of asking for information ______it is needed.