[ Grammar ]
______ the pressure gauge and the temperature gauge are crucial for safe operations.
A. Both
B. Either
C. Neither
D. None
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Present Perfect Simple and ContinuousGrammar - First ConditionalPast Simple Negative & QuestionsMixed TensesModal Verbs and Gender NounsHave toTenses, Determiners & Subject Verb AgreementVerb-ing or to VerbPassive Modals, Impersonal PassiveModal PerfectOther quiz:
Past Tenses › ViewWe ___________ (play) football when it started to rain.
A. were playing
B. played
C. play
D. playing
Grammar › View
Riding a bicycle is ____ to learn.
A. too easy
B. so easy
C. as easy as
D. enough easy
TOEFL Grammar › ViewChoose the sentence with the correct grammar.
A. He classify those pens into different colors.
B. I will classify these species into different groups.
C. I will classified these species into different group.
D. He classifying those pens into different colors.
Grammar › View
An elephant is _______ than a buffalo.
A. large
B. larger
C. largest
D. as large as