51 All flights _________ because of the snowstorm, many passengers could do nothing but take the train.
　　A) had been canceled
　　B) have been canceled
　　C) were canceled
　　D) having been canceled
　
　　52 __________ seeing the damage he had done, the child felt ashamed.
　　A) By
　　B) On
　　C) At
　　D) For

　　53 Remember that customers don't ________ about prices in that city.
　　A) debate
　　B) consult
　　C) dispute
　　D) bargain

　　54 Research findings show we spend about two hours dreaming every night, no matter what we ___________ during the day.
　　A) should have done
　　B) may have done
　　C) would have done
　　D) must have done

　　55 I hope that you'll be more careful in typing the letter. Don't _________ anything.
　　A) lack
　　B) withdraw
　　C) omit
　　D) leak

　　56 This crop does not do well in soils ___________ the one for which it has been specially developed.
　　A) outside
　　B) other than
　　C) beyond
　　D) rather than

　　57 "You are very selfish. It's high time you ________ that you are not the most important person in the world," Edgar said to his boss angrily.
　　A) realized
　　B) have realized
　　C) realized
　　D) should realize

　　58 These two areas are similar _________ they both have a high rainfall during this season.
　　A) to that
　　B) besides that
　　C) in that
　　D) except that

　　59 The tomato juice left brown __________ on the front of my jacket.
　　A) spot
　　B) point
　　C) track
　　D) trace

　　60 If I hadn't stood under the ladder to catch you when you fell, you ________ now.
　　A) wouldn't be smiling
　　B) couldn't have smiled
　　C) won't smile
　　D) didn't smile

　　61 The committee is totally opposed ________ any changes being made in the plans.
　　A) of
　　B) on
　　C) to
　　D) against

　　62 We'll visit Europe next year _________ we have enough money.
　　A) lest
　　B) until
　　C) unless
　　D) provided

　　63 My father seemed to be in no __________ to look at my school report.
　　A) mood
　　B) emotion
　　C) attitude
　　D) feeling

　　64 When he realized the police had spotted him, the man ______ the exit as quickly as possible.
　　A) made off
　　B) made for
　　C) made out
　　D) made up

　　65 I was advised to arrange for insurance _________ I needed medical treatment.
　　A) nevertheless
　　B) although
　　C) in case
　　D) so that

　　66 Frankly speaking, I'd rather you __________ anything about it for the time being.
　　A) didn't do
　　B) haven't done
　　C) don't do
　　D) have done

　　67 I'm sorry I can't see you immediately; but if you'd like to take a seat, I'll be with you _________.
　　A) for a moment
　　B) in a moment
　　C) for the moment
　　D) at the moment

　　68 The trumpet player was certainly loud. But I wasn't bothered by his loudness _______ by his lack of talent.
　　A) than
　　B) more than
　　C) as
　　D) so much as

　　69 Our new house is very _________ for me as I can get to the office in five minutes.
　　A) adaptable
　　B) comfortable
　　C) convenient
　　D) available

　　70 Our journey was slow because the train stopped __________ at different villages.
　　A) unceasingly
　　B) gradually
　　C) continuously
　　D) continually