[ Subject and Verb Agreement ]
The camshaft _____ a fuel intake valve allowing fuel and air to enter the cylinder via an intake port.
A. open
B. opens
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Simple Present and Present ContinuousPresent Tense vs Past TenseModals of Obligation and PermissionAdverbs by TypePRESENT SIMPLE - CHILDRENGerund & ParticipleFuture - will / going to / present continuousAuxiliaries VerbTenses - Pasive VoiceDeterminers & QuantifiersOther quiz:
Tenses › ViewAt last the bus came. We ____________ for half an hour.
A. waited
B. was waiting
C. have waited
D. had been waiting
Grammar › View
There was no _________ that he had committed the crime.
A. prove
B. proof
C. proofs