[ Tenses ]
When Carol _________ dinner, someone __________ on the door.
A. was cooking/ was knocking
B. was cooking/ knocked
C. cooked/ knocked
D. cooked/ was knocking

Random Topics:
Preposition FormPrepositions & Modal VerbsModal AuxiliaryActive-Passive VoicesFigurative LanguageProgressive TenseNo Excuse Words / Conjunction SOGrammar and SyntaxActive vs. Passive VoiceGrammar - too & enoughOther quiz:
Perfect Progressive Tenses › ViewShe ______ (not/study) for the exam when I called her.
A. was not studying
B. had not been studying
C. has not been studying
Indefinite Pronouns › View
We went _ this weekend. We stayed at home.
A. anybody
B. somewhere
C. nowhere
D. everywhere
Prepositions › ViewDavid is always _____ time.
A. in
B. on
C. with
Homonyms › View
Meet me in the back ___.
a. lain
b. lane
