[ Present Perfect Tense ]
The Past Participle Form for KNOW is?
A. Known
B. Knowed
C. Knew
D. Know

Random Topics:
Simple Future - PassivePast ContinuousThere is, There are, Some, AnyGrammar - NounsAsking & Giving OpinionPlaces in TownIdiom and TensesConditional 0Modal Verbs and Gender NounsBasic TensesOther quiz:
TOEFL › View_____________a tornado spins in a counterclockwise direction in the northern hemisphere, it spins in the opposite direction in the southern hemisphere.
A. However
B. Because of
C. Although
D. That
Vocabulary › View
sudden and striking
A. specific
B. dramatic
C. absorb
D. opt
Grammar › ViewThe audience _______ after watching the great performance.
A. sang beautifully
B. danced gracefully
C. clapped loudly
D. smiled sweetly
Tenses › View
What time expression indicates simple present tense?
A. always, usually, often, sometimes, never
B. sometimes never
C. always late
D. usually tomorrow
