Question

Darrel has realised too late that he ________ (to wait) for Jill for more than 3 hours when her aircraft lands. will wait will have waited The Future Perfect Continuous (like the Future Perfect) expresses the idea that an action will continue up until another one or certain time point in the Future. But the Future Perfect Continuous is more concentrated on the duration. We use it when it is important for us to emphasise 'how long' something will be in progress in the future: for an hour, for a week, for a year, etc. 2

Accepted Answer

2 will have been waiting will be waiting future tenses

Task	Darrel has realised too late that he ________ (to wait) for Jill for more than 3 hours when her aircraft lands.
Answer	2
a	will wait
b	will have been waiting
c	will have waited
d	will be waiting
comment	The Future Perfect Continuous (like the Future Perfect) expresses the idea that an action will continue up until another one or certain time point in the Future. But the Future Perfect Continuous is more concentrated on the duration. We use it when it is important for us to emphasise 'how long' something will be in progress in the future: for an hour, for a week, for a year, etc.
topic	future tenses
level	2

Future Waiting Perfect Continuous Darrel Realised Late Wait