[ Subject and Verb Agreement ]
The engine ______ by igniting mixture of fuel and air causing combustion.
A. is
B. are

Random Topics:
AdverbsComparisionModal Verbs and PermissionGrammar : Structural Common ErrorsKinds of SentencesPresent tense AffirmativeGrammar: so and suchKnee AnatomyConditionals and Modals of ProbabilityGerund Subject or ObjectOther quiz:
Many vs. Much › ViewI don’t read _____ newspapers at all.
A. Any
B. A lot of
C. Many
D. Some
Grammar › View
Fabio is ______.
A. a generous person
B. a generous
C. generous people
Grammar › ViewThe campers had to ______ (walk) uphill for 40 minutes.
A. Walking
B. Walk
C. Walked
Past Continuous Tense › View
Mrs. Adams was ___________ dinner when I got there.
A. have
B. having
