Toefl Exercise 2

7.  It is not clear when ... although there a           many different theories.
 A.  dinosours becoming extinct
 B.  dinosours extinction
 C.  dinosours became extinct
 D.  did dinosours became extinct
The answer : C, because if the first sentence using simple present tense, so the second sentence using past tense.

8. The professor decided  to allow  the
                                                    A
student to take the examination a second
                      B.                                          C
time because the low scores.
              D
 A. to allow           
 B. second 
 C. take
 D. because
The answer : D, because after word   because   is noun (phrase). So, we must using because of + noun (phrase).

 9. If the drivers own car ... damaged, the favorite probably would have won the race.
 A. had not been   
 B. not     
 C. no had been
 D. has no be
The answer : D, because using the present perfect tense, so using has no be. be is using because meet damaged (adj).

 10. Having withdrawn from the race, the
           A
candidate decided supporting his opponent
                                          B
despite the opponents representing the
     C
other political party.
   D      
 A. having             
 B. supporting       
 C. despite
 D. other
The answer : A, because, if sentence begins with [verb + ing] (gerund), the verb must also be singular and using singular verb. But, the sentence above does not using verb.

 11.  The soldiers were unable to determine where ...
 A. the jeep had been left
 B. had been leave the jeep
 C. had the jeep been left
 D. had the jeep left
The answer : A, because, if the first sentence using past tense, so the second sentence using past perfect (S + had been + past participle)

 12. The manager was angry because somebody...
 A. had allowed the photographers to enter the bulding
 B. had let the photographers to enter the building
 C. permitting the photographers enter the building
 D. the photographers let into the building
The answer : A, because, if the first sentence using past tense, so the second sentence using past perfect (S + had + past participle)

 13. The comite members resented ... of the meeting
A. The president that he did not tell them
B. the president not to inform them
C. the presidents not informing them
D. that the president had failed informing themselves
The Answer : D, because the word "resent" is a transitive verb, followed by a verb noun and after the verb "resent" there must be a noun phrase or a clause. And then  after a verb that requires a gerund in the subordinate clause, any noun must be possessive.  Informing is a gerund because of "resented".


 14. ... did arthur realize that there was danger
 A. Upon entering the store

 B. when he entered the store

 C. after he had entered the store

 D. only after entering the store

The Answer : B , because the anwer B using past tense and  " did " usally use in the ast tense.