[ Tenses ]
He _______ for the charity for 10 years.
A. has worked
B. works
C. is working
D. worked

Random Topics:
Simple Future - PassiveNoun Phrases and AdverbialsVerb TensePresent Simple, Present Continuous or Present PerfectSubordination ConjunctionsDependent PrepositionRelative & ModalsGrammar TOEFLAdjective OrderWish SentenceOther quiz:
Grammar › ViewJohn works at the new office building downtown, …?
A. doesn’t he
B. isn’t he
C. doesn’t it
Tenses › View
Many people ——————— in the riots.
a) Killed
b) Were killed
c) Was killed
d) Had killed
. What was special about the notebook?
A. It contained drawings of unknown places and notes about them.
B. It was full of math equations and homework answers.
C. It had a map leading to a hidden treasure.
D. It contained a list of famous historical events.
Vocabulary › View
Data for which each piece of data fits into exactly one of several different groups or categories.
A. quantitative data
B. categorical data
C. statistical question
D. observational study
