2770. Which following option is the appropriate wh-question for the underlined parts of the sentece 'I have been reading the book for two hours?"
How long have you been reading the book?
How long I have been reading the book?
How long have I been reading the book?
How long you have been reading the book?
For how long you have been reading the book?
ব্যাখ্যা: কিছু সময় নির্দেশক বাক্যের জন্য wh question How long দ্বারা শুরু হবে। Present perfect continuous tense যুক্ত বাক্যটির question-এর structure হলো how long + have + you +been+verb+ing+ob + question mark.