TEST ON TENSES -27(with key)

1- Winter, the most unpredictable of all seasons in Istanbul, sometimes ……. as early as October and ……. until April.
A) began/has lasted
B) will begin/is lasting
C) began/will have lasted
D) begins/was lasting
E) begins/lasts

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2- People ……. down all the world’s rain forests before the authorities ……. any action.
A) have cut/took
B) will have cut/take
C) will be culling/will take
D) are cutting/have taken
E) had cut/are taking

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3- In 1865 the northern states of the United States ……. the southern states, which ……. to break away and form a separate nation.
A) were defeating/have attempted
B) defeated/had attempted
C) defeat/were attempting
D) have defeated/attempted
E) had defeated/have been attempting

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4- Although a number of nuclear power plants ……. safely for years, public concern about the potential dangers of nuclear power ……. it from becoming a major electricity producer.
A) have been operating/has prevented
B) are operating/prevented
C) had operated/will prevent
D) operated/had been preventing
E) were operating/was preventing

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5- No one ……. in climbing the world’s highest mountain, Everest, before Edmund Hillary and Tenzing Norgay ……. it in 1953.
A) was succeeding/have been doing
B) succeeded/were doing
C) has succeeded/have done
D) had succeeded/did
E) had been succeeding/had done

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6- As late as the 1960s, only a few specialists ……. how to use computers, but now computer programming ……. one of the most popular professions in the world.
A) were going to know/becomes
B) had known/became
C) knew/has become
D) will have known/will become
E) have known/is becoming

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7- Searchers ……. to be confident that they ……. the missing climbers before nightfall.
A) are appearing/find
B) appear/will have found
C) were appearing/are finding
D) will appear/had found
E) had appeared/have found

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8- Some people think that robots, which ……. an important role in automobile manufacture already, ……. most of our physical work for us soon.
A) had played/are doing
B) played/have done
C) are playing/will be doing
D) were playing/will have done
E) had been playing/do

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9- Even after colonialism ……. early in the second half of the 2Oth century, many former colonies ……. to use the language of their former rulers.
A) ended/continued
B) has ended/were continuing
C) had ended/have been continuing
D) was ending/had continued
E) has ended/have continued

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10- I hope the pond ……. over by Christmas, so we can go skating when our cousins ……. to visit.
A) will be freezing/have come
B) is freezing/are coming
C) had frozen/were coming
D) has frozen/came
E) will have frozen/come

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1.E
2.B
3.B
4.A
5.D
6.C
7.B
8.C
9.A
10.E