Choose the most natural sentence to describe an ongoing future activity with duration:
About this question
This question belongs to "Thì tương lai hoàn thành tiếp diễn – Future Perfect Continuous" on Học Mỗi Ngày. Review the answer, solution, and related items in the same set to study more effectively.
Question detail
Choose the most natural sentence to describe an ongoing future activity with duration:
A
By lunch, he will have been sleeping for 12 hours.
B
By lunch, he is sleeping for 12 hours.
C
By lunch, he will be sleeping for 12 hours.
D
By lunch, he has been sleeping for 12 hours.
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