You have been running in circles ____ 30 minutes!
A. since
B. for

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Verbal TensesComparatives ( adj/ adv)Past Simple, Present Perfect TenseNo Excuse Words / Conjunction SOSimilesQuestion Tags in Verb TensesInfinitives or GerundsPresent Perfect Tense and Simple Past TenseQuantifiers and ArticlesAdverb of MannersOther quiz:
Tenses › ViewBy 1914, Fawcett, ___ to formulate ideas, based on his research, about a legendary lost city he named Z. In 1925, he ___ a three-man team that included his son Jack into Brazillian jungle to find the lost city of Z.
A. has begun / leads
B. had begun / led
C. begins / has led
D. was beginning / was leading
E. was going to begin / led
Vocabulary › View
A number without a variable; a number by itself; a quantity that does not change its value
A. Constant
B. Algebraic Expression
C. Coefficient
D. Distributive Property
E. Equation
Grammar › ViewI was ________ exhausted by the end of the day.
A. extremely
B. incredibly
C. completely
Grammar › View
Which sentence is in the future perfect tense?
A. The airplane had arrived at the gate already.
B. The airplane has arrived at the gate already.
C. The airplane will have arrived at the gate already.