[ 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:
ComparisonsPresent Perfect, Present Simple, Present ContinuousPersonal & Possessive PronounsPast simple - Irregular VerbsPrepositions and Preposition PhrasesPresent Tenses and ConnectorsPerfect Tenses and VocabularyVerb Forms and PrepositionsConjunctions and PrepositionSentence Adverbs & Third ConditionalOther quiz:
Present Continuous Tense › ViewA : Are you watching TV now ?
B : ……………………………………
_
A. No, we are not now
B. No, we are watching TV now.
C. Yes, we are reading books now.
D. Yes, we are watching TV now.
Present Continuous › View
A: ________ they ________ a meeting on Thursday?
B: Yes, they _______.
A. Are / have / are
B. Are / having / aren’t
C. Are / having / are
D. Are / having / is
Modal Verbs › View___________ I borrow your pen for a minute?
A. May
B. Should
C. Must
Simple Past Tense › View
The last December 31, 2014 we . . . The New Year Eve and Night Happily.
A. Celebrate
B. Celebrated
C. Celebrates
D. Celebration