[ Perfect Progressive Tenses ]
I ______ (read) this book for three hours by the time you arrive.
A. am reading
B. have been reading
C. will have been reading

Random Topics:
Passive SentencesComparatives - SuperlativeTenses and Time MarkersAuxiliary WordsComparatives, Superlatives & EquativesArticles and DeterminersAdverbial Clauses of Manner and ResultActive & Passive VoicePresent Tense vs Present ContinuousModal Verbs of PermissionOther quiz:
Grammar › ViewMr. Haikal always __________ his holidays carefully. He read about the place before he go there.
A. have
B. make
C. plan
D. live
Mixed General Quiz › View
Jimmy Carter, the 39th President of the United States, was ___ and raised in the small town of Plains.
a. born
b. bore
c. borne
Janith and Noemi __________ to the cinema every weekend!
A. Do
B. Goes
C. Went
D. Go
Will or Going to › View
Look the sky, it’s so dark! I’m sure ______.
A. It’s going to rain
B. It’ll rain