[ Vocabulary & Grammar ]
Cultural problems can range from miscommunication to actual conflict, all ____ effective worker productivity and performance.
A. endanger
B. endangers
C. endangering
D. endangered

Random Topics:
Gerund and InfinitivesTenses PracticeZero and First ConditionalsAuxiliary WordsIf/Unless - Conditional type 1Conjunction and PunctuationVerb Forms and PrepositionsPunctuationPast Continuous vs Past SimpleGrammar / PronounsOther quiz:
Countable Noun › ViewIt’s too __________ for me. I can’t eat it all
A. Much
B. Many
C. Some
Grammar › View
Tom likes curry, but his family ___.
a. don’t
b. doesn’t
c. didn’t
He hates ____________ for the bus?
A. wait
B. to wait
C. waiting
Grammar › View
We usually _____English every day.
A. studies
B. studying
C. study
D. studied
