[ Grammar ]
I have a lot of ____ on the subject.
A. knowledge
B. knowledges

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Present ProgressiveConditional Sentences and Verb FormConditionals (0 - 1 - 2)Asking & Giving AttentionSentence Structure and Pronoun AntecedentModal VerbAdjective vs AdverbCan vs CouldPresent/Past/Past ParticplePast and Future TensesOther quiz:
Vocabulary › ViewWhat part of speech is the word ‘acknowledge’?
A. noun
B. verb
C. adjective
D. adverb
Subject Verb Agreement › View
Physics ______ an interesting subject.
A. is
B. are
Mixed General Quiz › ViewWhich of the following cities is not a national capital?
A. Prague
B. Shanghai
C. Moscow
D. Ottawa
E. Caracas
Grammar › View
She was too hot so she turned on the air conditioner. The verb “was” is what kind of verb?
A. Linking
B. Action
