Which sentence correctly uses the past perfect continuous tense to indicate an action of certain duration with visible results in the past?
A. They had walked in the rain.
B. They were walking in the rain.
C. They had been walking in the rain.
D. They have been walking in the rain.

Random Topics:
Adverb of Frequency and TensesPronoun & Present SimpleWord FormationGrammar Past and Future TenseModals of ProhibitionConjunctions in Complex SentencesPassive and Active SentencesAbilityArticles and PronounsGrammar and Sentence StructureOther quiz:
Grammar › View. Choose the correct comparative form: This test is ___ than the one we had last week.
A. difficult
B. more difficult
C. most difficult
D. difficulty
Tenses › View
She enjoys reading books every evening.
The verb of the sentence is …….
A. She
B. enjoys
C. reading
D. books
E. every evening
Pronouns and Antecedents › ViewEvery one of the actresses knows (her, their) part by heart.
A. her
B. their
Vocabulary & Grammar › View
Before he ________ to Ho Chi Minh city last night, he ________ the contract of the new album.
A. flew / signed
B. had flown / signed
C. had flown / had signed
D. flew / had signed
