Peter ___________________ (be) to Thailand once before.
A. has been
B. has be
C. have been
D. have be

Random Topics:
Future Simple TensesPresent Simple and Present Continuous TensesGrammar TOEFLVocabularyConjunction: Because and SoArticles & Compound NounsPassive VoiceAdverb of MannersWishesGrammar - Present Perfect with already, just, yetOther quiz:
Grammar › View There are _________ fish in the aquarium.
A. many
B. much
C. any
D. a little
Grammar for TOEFL › View
The professor could not understand _____ most of the students failed the exam despite the fact that the material had been thoroughly discussed in class and additional study sessions were provided.
A. why
B. if they were paying attention during the lectures,
C. while he was explaining the difficult parts,
D. because they seemed well-prepared during the review,
Tenses › ViewFuture Perfect Continuous: In a year, they ________ in the same city for a decade.
A. will live
B. will have been living
C. are living
D. lived
Present Tenses › View
I can’t go with you because I (not finish) my homework yet.
A. have finished
B. finished
C. haven’t finished
D. finish
