[ Tenses ]
Past Perfect Continuous Tense
How long _______ before they finally finished the project?
A. did they work on it
B. had they been working on it
C. have they been working on it
D. were they working on it

Random Topics:
Adverb of TimeRelative & ModalsArticles and NounsFigurative LanguageThe First Conditional (if/unless)Going To Be and WillVerbs of movementConditional Sentence Type 0-3ComparisionVerb PatternsOther quiz:
No Excuse Words / Conjunction SO › ViewI just walked through the _____.
A. filed
B. field
C. feild
Possessive Nouns › View
The door of the classroom is broken.
A. The classrooms door is broken.
B. The classroom’s door is broken.
C. The classrooms’ door is broken.
Grammar › ViewWhich expression shows giving suggestion?
A. You should go to a dentist
B. Open the door, please!
C. Can you tell me what I shoud do?
Plural › View
What is the plural form of knife?
A. Knife
B. Knives’
C. Knifes
D. Knives
E. Knife’s
