Which sentence correctly uses the past perfect continuous tense?
A. She had been waiting for an hour when he finally arrived.
B. She has been waiting for an hour when he finally arrived.
C. She was waiting for an hour when he finally arrived.
D. She will have been waiting for an hour when he finally arrives.

Random Topics:
Contrast Linking WordsPerfect and Past TensesPhrase and ClauseDirect and Indirect SpeechGrammar - TOEICParticiple Clauses & Cleft SentencesNoun / PronounPast and Past ContinuousPronunciation and VocabularyFormal & Informal WordsOther quiz:
Grammar › ViewWhen we were on a voluntary tour, we______ to public places to collect rubbish every day.
A. were going
B. went
C. have gone
D. had gone
Subject Verb Agreement › View
Neither the dogs nor the cat … very hungry
A. is
B. are
Grammar › ViewChoose the past participle in the sentence. Ben called a plumber to fix the broken pipe that is dripping in the laundry room.
A. called
B. fix
C. broken
D. dripping
Tenses › View
What does the present perfect tense imply when no specific time is mentioned?
A. An action that happened at an unspecified time in the past
B. An action that will happen in the future
C. A repeated action in the past
D. An action happening right now
