The professor is an ___ specialist in the field.
VocabularyLets vs. Let’s Gerund vs. InfinitiveGrammar, Conditional Sentences, VocabularyArticle the or zero article (-)Relative & Interrogative PronounsGrammar - Wh QuestionsZero ConditionalInfinitives and ING Forms
Other quiz: Grammar
We have lunch __________ half past five.
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