# 1ปรนัยWhich sentence is in the present perfect continuous tense?She is reading a book.She has been reading a book.She read a book.She will read a book.
# 2ปรนัยWhat is the correct present perfect continuous form of "They (study) for hours"?They have been studying for hours.They are studying for hours.They have studied for hours.They will have studied for hours.
# 3ปรนัยChoose the sentence that correctly uses the present perfect continuous tense.He has been working here since 2015.He works here since 2015.He has worked here since 2015.He will work here since 2015.
# 4ปรนัยFill in the blank: She ______ (wait) for the bus for over an hour.has been waitingwaitsis waitingwaited