—She got her first science fiction published. It turned out to be________.—When was that?—It was in 2009 ________ she was still in college.

 It was ______ to go down the hills.

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

The meetings are very short, so there is little _____ to have a real discussion.

--- Mum, I’m going to visit my aunt. What about a week? --- A week is too long. Try to be back in a ______ of days.