题目内容：

41.A:“ Are you still having trouble with your television ”
B:“ No,I _____ it repaired last week.”
42.A:“ Emma is _____ a good swimmer that she wins all her races.”
B:“ Really Is she going to the Olympic Games ”
43.A:“ I’m planning to drive to Sydney this weekend.”
B:“ Well,take a map in _____ you get lost.”
44.A:“ I wish I _____ speak perfect English ”
B:“ Honestly,most English people can’t do that ”
45.A:“ The accident wouldn’t have happened if I’d been more careful.”
B:“ You mustn’t blame _____ .It wasn’t your fault.”
46.A:“ _____ to some experts,pollution is constantly increasing.”
B:“ I don’t believe it.It certainly isn’t any more polluted here.”
47.A:“ I hope that this letter to Alisa arrives on time.”
B:“ You really _____ have posted it yesterday,as I told you.”
48.A:“ Do you enjoy working in the hotel reception?”
B:“ Not really.I hate _____ interrupted by phone calls all day.”
49.A:“ Did you start this job as soon as you graduated
B:“ Yes.By December,I _____ have been working here for five years.”
50.A:“ The boss is very angry about the number of errors we’ve been making ”
B:“ Right,we’d _____ not make any more mistakes.”