Verb Study
All Verbs
Verb Quiz
cooperate
cooperate, cooperated, cooperated
To work together
合作
Base Form
cooperate
Simple Past
cooperated
Past Participle
cooperated
3rd Person Singular
cooperates
-ing Form
cooperating
Categories
Type 2: reg
Type 5: a-b-b
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1
2026-07-15
G
G
B
B
All Verbs
Verb Quiz
Verbs starting with "coo"
2
cook
cooperate
Verbs ending with "ate"
50
accumulate
activate
administrate
anticipate
appreciate
calculate
celebrate
collaborate
collate
communicate
concentrate
congratulate
conjugate
cooperate
create
cultivate
deactivate
decorate
dedicate
demonstrate
devastate
dominate
donate
educate
elevate
evacuate
frustrate
generate
graduate
grate
hate
humiliate
illuminate
imitate
indicate
initiate
integrate
investigate
lubricate
manipulate
motivate
navigate
negotiate
operate
participate
penetrate
replicate
separate
sophisticate
speculate
Verbs
10
control
convict
convince
cook
cooperate
copy
correct
corrupt
cost
cough
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