7.
It is not clear when __________, although there are many different theories.
A.
dinosaurs becoming extinct
B.
dinosaurs extinction
C. dinosaurs became extinct
D.
did dinosaurs become extinct
Answer
: C: dinosaurs became extinct. the
order is subject + verb, with no auxiliary.
8.
The professor decided( (A) to allow )the students ((B)to take)
the examination ((C)a second) time ((D)because)
the low scores.
Answer
: D: because. The expression must be
because of because it is followed by a noun phrase, the low scores.
9.
If the driver’s 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
Answer
: A: had not been. Use the past
perfect construction in past condition.
10.
((A) Having) withdrawn from the race, the candidate decided ((B) supporting) his opponent ((C) despite) the opponent’s representing the ((D)
other) political party.
Answer
: B: supporting. Decide must be
followed by the infinitive, to support
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
Answer
: A: the jeep had been left. After
the question word in an embedded question, the order is subject + verb.
12.
The manager was angry because somebody _________.
A. had allowed the photographers to
enter the building
B.
had let the photographers to enter the building
C.
permitting the photographers enter the building
D. the photographers let into the
building
Answer
: A: had allowed the photographers to
enter the building. The past perfect tense is used to describe an action
that happened before another action and both of these action have happened in
the past.
13.
The committee members resented __________ of the meeting.
A.
the president that he did not tell them
B. the president not to inform them
C. the president’s not informing them
D.
that the president had failed informing themselves
Answer
: C: the president’s not informing them.
After the verb resented there must be a noun phrase or a clause.
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
Answer
: D: Only after entering the store.
After a limiting word (only) introduces a sentence, the order of the subject
and verb is altered. That is why this sentence has the auxiliary did.
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