[ Simple Past Tense and Present Continuous Tense ]
Sally: Now, close your eyes and listen carefully. What ………………(I, do)?
Inggrit: You are knocking the door.
A. am I doing
B. are I doing
C. is I doing
D. aren’t I doing

Random Topics:
Past Simple or Past ContinuousPhrase or ClauseComparativeUsed to & would & Past SimplePassive Voice in Past Simple TensePhrasal VerbComparatives, Superlatives, and ModalsV-ing/to-VGrammar: Simple Past and Past ContinuousActive Voice-Present tenseOther quiz:
Vocabulary › Viewto reach the highest or final point; to reach the final stage of something you’ve been working toward
A. culminate
B. appease
C. defiant
D. nurture
Past Modals › View
My eyes weren´t so good so I …………….. wear my reading glasses.
A. could
B. couldn´t
C. had to
D. didn´t have to
Articles › ViewI hate ____ violence.
A. a
B. the
C. —
D. an
Correlative Conjunction › View
When I go to the home for the elderly, I ______sing song _____ recite poems for its residents.
A. either….or
B. neither….nor
