Bob is trying hard to keep ___ with the rest of his class.
Start vs. BeginPresent vs. Past Participle Conditional Sentence Type 0, 1, 2, 3 Simple PresentPast ContinuousFamily VocabularySubject-Verb AgreementIn/On/At + TimePresent Continuous, Present Perfect and Used to
Other quiz: Grammar
The man ………… was working in the office was friendly.
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