[ Phrasal Verbs ]
Natural gas prices have … since the last war in Russia.
A. gone up
B. cut off
C. pulled through

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1st & 2nd ConditionalsThere is, There are, Some, AnySimple TenseSentence Structure and Grammar RulesAuxiliary Verbs & Question TagsGive, do and makeProgressive Perfect and Simple Verb TensesTo infinitive - GerundSingular and Plural NounsAuxiliary WordsOther quiz:
Vocabulary › Viewmany times at short intervals
A. Frequently
B. Formulate
C. General
D. Intent
Tenses › View
Had he entered the company before he achieved his master degree in 1990?
A. Yes, he had.
B. No, he had not.