[ Past Continuous Tense ]
You _____ _______ on the door but I was not at home.
A. were knocking
B. was knocking
C. knock ing
Select your answer:

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Present TenseTenses, Determiners & Subject Verb AgreementConditional Sentence Type 2Countable & Uncountable NounsModals of ProbabilityPresent, Past, and Future TimeRelative & ModalsConditionals and Modal VerbsDirect and Indirect QuestionGrammar - too & enoughOther quiz:
Grammar › ViewIdentify the direct object in the following sentence.
“The tourists took photos from the train.”
___
A. tourists
B. photos
C. train
D. from
Perfect Tense › View
I …… to them three times, but I still haven’t received any comments.
A. wrote
B. have been writing
C. have written
D. had written
E. will have written
