It’s ___ impossible for us to finish the task within half a month.
What is most obvious in this book are all those details of daily living which make Mrs. Richard _____ common.
Noone has _____ been able to trace the author of the poem.
It was a great _____ for him to be pleasant to people he didn't like.
The exciting news he had been looking forward ___ at last, so he did nothing but____.
I will hire the man _____ they say is a good English speaker.