[ Tenses ]
Charlie ……………. the dog when it started to rain
A. walked
B. had been walking
C. as walking

Random Topics:
Modal Auxiliary VerbsDirect and Indirect SpeechThird ConditionalsVerb Tenses (Progressive, Perfect)Reflexive pronounsConditional Sentences and AdverbsPunctuationGrammar SuffixesContinuous TenseTag QuestionOther quiz:
Grammar › ViewEating and talking with friends are the most common ways of …………… .
A. relaxation
B. relaxed
Grammar & Vocabulary › View
Athens is a ____ in Greece.
A. mountain
B. river
C. city
D. island