My interest in surfing on the Internet has_______ most of my spare time, but it has repaid me a great deal of enjoyment.
____ was very ______ that little Jim wrote the letter.
What is it _____ his daughter needs most?
Who was it _____ saved the drowning girl?
“How was ______ they discovered the entrance to the underground palace?” “Totally by chance.”
___ that caused him to serve dinner an hour later than usual.