____ his telephone number, she had some difficulty getting in touch with Bill.
Last summer I took a course on ______ poisonous gases.
--- ______ the sports meeting might be put off.---Yes, it all depends on the weather.
Till now, three films ______ in that village this month.
______ at the terrible news that I didn’t know what to say.
______ time went by, his illness was getting worse.