Examkin

Soru

Zorluk: OrtaSubject-Verb Agreement

In the field of volcanology, continuous satellite monitoring of sulfur dioxide plumes emitted by active volcanoes ______ researchers to track shifts in magma movement. By measuring the concentration of these gases from orbit, scientists can detect impending eruptions days before they occur on the ground, thereby providing critical warnings to nearby communities.

Which choice completes the text so that it conforms to the conventions of Standard English?

  1. A
    allow
  2. allowsCevap
  3. C
    are allowing
  4. D
    was allowing

Cevap

allows
The singular verb 'allows' correctly agrees with the singular subject 'monitoring.' The plural nouns 'plumes' and 'volcanoes' are object of prepositions in the intervening phrase and do not affect the verb's form.

Adım Adım Çözüm

1
Identify the subject of the target clause.
The subject is 'monitoring' (singular), not 'plumes' or 'volcanoes' (plural), which are part of the intervening prepositional phrase 'of sulfur dioxide plumes emitted by active volcanoes.'
Verb agreement is determined by the true subject of the clause.
2
Determine the correct tense and form of the verb to match the subject and context.
The passage describes a general fact in the present tense (using 'can detect' and 'occur'), so a singular, present-tense verb ('allows') is required.
To maintain subject-verb agreement and tense consistency throughout the passage.

Anahtar Kavram

Subject-verb agreement with intervening prepositional phrases and maintaining tense consistency.
Tahmini Süre:45s
Bu soruyu puanla

Konular

Subject-Verb Agreement

Bu konudan daha fazla soru