--- My watch is nowhere to be found. --- Don’t worry! I’m sure it will ____ sometime when you’re not looking for it.
____, he does not know the answer.
We were ____ to go out for a camp ____ it began to rain.
____ several times, the young scientist still kept on doing his experiments.
It was last October ____ they finally came back to their hometown.
My pen is missing. I can’t find ____ anywhere.