When she _____ (open) the door, she realized she had forgotten her keys.
A. opened
B. had opened
C. has opened
D. was opening

Random Topics:
Sentences and Non SentencesArticles and NounsVerb BEPast Tense & Past Continuous TenseBASIC GRAMMAR - PRONOUNSHow much and how manyGrammar - Present Perfect with already, just, yetModal Auxiliaries and Similar ExpressionsPassive Voice & TensesPresent Perfect and Past TensesOther quiz:
Future Forms › ViewMy ski instructor believes it ____________ in the mountains tomorrow evening.
A. will snow
B. is going to snow
C. is snowing
D. is been snow
Vocabulary › View
providing ease and comfort far beyond what is ordinary or necessary.
A. associate
B. luxurious
Perfect Tenses › ViewUse the present perfect tense in a sentence to describe an action that started in the past and is still continuing.
A. I have visited Paris last summer.
B. I have lived in this city for ten years.
C. I have finished my homework yesterday.
D. I lived in this city for ten years.
Reported Speech › View
Maria: “I think I will go out to dinner tonight.”
A. Haru: Maria said (that) she thought she would go out to dinner tonight.
B. Haru: Maria said (that) she thought she willing go out to dinner tonight.
C. Haru: Maria said (that) she thought she will go out to dinner tonight.
D. Haru: Maria said (that) she thought she will be going out to dinner tonight.
