# 1เลือกตอบ * By next year, I __________ (work) here for ten years.will work will be working will have been working
# 2เลือกตอบShe __________ (study) for the exam all night.will have been studying has been studyingwill study
# 3เลือกตอบBy the time they arrive, we __________ (wait) for them for two hours.will be waiting will have been waitingwill have been waited
# 4เลือกตอบHe __________ (travel) around the world for five years when he finally settles downwill have been travelwill have be travelingwill have been traveling