It won’t be a very long time _________ he is in business for himself. 

We should make____a rule for us that the last to leave the classroom shall turn the light off.

Although punctual himself, the professor was quite used ________ late for his lecture.

Spacecraft “Discovery” has failed in the course of launch. ----_______? They have been preparing for the test.

—“Did you have any difficulty in yesterday’s homework?”—  “No, in fact I found _____.”