The second option is definitely more complicated
I phoned him because he was not home.
The second part of the sentence is now dependent on the first as it cannot stand alone as its own sentence.
Hi, you've asked an incomplete/unclear question. The full question read;
Which of the phrases below is <u>not</u> in the future perfect continuous?
a) You will have been waiting here for three hours by 8 o'clock.
b) You will be waiting for her when her plane arrives tonight.
c) By the end of next month I will have been living here for ten years.
d) When I finish this course, I will have been learning Italian for ten years.
e) Next month I will have been working here for two years.
Answer:
<u>b) You will be waiting for her when her plane arrives tonight.</u>
Explanation:
We make this conclusion because the phrase <em>"will have been" </em> (which is the future perfect of the verb "to be") is often added to the subject of a sentence to make it future perfect continuous.
However, after careful check of all the sentences, we notice all of them except option b used the future perfect continuous phrase, <em>"will have been." </em>