[ Present Perfect Simple ]
The kids has put helmets on
A. Correct
B. Incorrect

Random Topics:
Conjunctive AdverbTOEIC Tenses, VerbsPrefixes SuffixesPresent SimpleSimple Future - WillPossessive Adjectives and Possessive PronounsInfinitive or GerundLinking VerbAdverbial Clause of Cause and EffectReporting VerbsOther quiz:
Countable & Uncountable Nouns › ViewThere is no room on the bus. There are ___ people
A. too many
B. too much
C. not enough
Grammar › View
What are important structures of the mouth?
A. Pharynx
B. teeth and tongue
C. nasal cavity
D. face
Conjunctions › ViewIn the sentence ‘I will go to the store, for I need to buy milk’, what is ‘for’?
A. Preposition
B. Adverb
C. Coordinating conjunction
D. Subordinating conjunction
Vocabulary › View
What is the primary function of a hydrant?
A. To generate electricity
B. To record historical events
C. To provide water access
D. To synchronize activities