[ Past Perfect Tense ]
He ________ to China before 2015.
A. has not been
B. have not been
C. had not been
D. was not been
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Grammar - Present Perfect with already, just, yetNouns, Pronouns, Antecedents, and Singular and PluralWH- Question WordsGrammar - either...or, neither...norBASIC GRAMMAR - PRONOUNSPast Tense vs Present TenseTransitional Phrases and ConjunctionsPresent Simple & Present Continuous TensesWish SentencesModals and Past TensesOther quiz:
Vocabulary › ViewThe government needs to seek a solution to prevent domestic violence as soon as possible.
A. recreation
B. remedy
C. keyword
D. technique
Grammar for TOEFL › View
The contracts signed by the company has been voided because some stipulations were not met.
A. Incorrect
B. Correct