[ Grammar and Sentence Structure ]
. Select the proper verb form:
A. Trees helps clean the air
B. Trees help clean the air
C. Trees helping clean the air
Select your answer:

Random Topics:
Adverbs of How Something is DoneModal Verbs and VocabularyConjunctionPronunciation and VocabularyTenses and OpinionsPassive Voice with ModalsTenses and StructuresConditional SentenceGrammar ErrorsShould, Should not haveOther quiz:
Subject-Verb Agreement › View
Though he prefers to maintain the original recipes as much as possible, he is willing to alter them a little to improve its taste.
A. Adjust
B. Retain
C. Substitute
D. Exchange
Grammar › View
During vocational education, students learn specific skills ______ their careers.
A. in
B. at
C. from
D. for
