[ 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:
Some vs. Any › ViewI’ve got ___ sweets for you.
a. some
b. any
Grammar › View
A cat is stuck in a tree. _____ at the top of the tree.
A. There’s
B. It’s
C. They are
D. Are
I 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
