yet

Now that she is out of job, Lucy ___ going back to school，but she hasn’t decided yet.

No one has yet succeeded in explaining the _________ of how life began

I ordered ____ book on Mark Twain some time ago. ___ book has not arrived yet

I ordered ____ book on Mark Twain some time ago. ___ book has not arrived yet

Now that she is out of job, Lucy ___ going back to school，but she hasn’t decided yet.

Yet a very little observation shows that the moon is not standing _________

No one has yet succeeded in explaining the _________ of how life began