If _________, the bird flu would produce a powerful poison that would kill the patients.A. not treat B not treated C untreated D. Both B and C
It was the first time that Tim ______ a lie. He was scared.
Sarah wondered what ______ her 70-year-old grandpa would make of the new computer.
It was _____ who telephoned me yesterday.
--- Oh, it’s you! I ______ you. --- I’ve just had my hair cut and I’m wearing new glasses.
The place was flooded ________ it had been raining for several weeks.