# 1เลือกประเภทBy next summer, John _______ in this company for 10 years. will workwill have workedwill be workingwill have been working
# 2เลือกประเภทThe construction workers _______ the new bridge by the end of next month.will completewill be completingwill have completedare completing
# 3เลือกประเภทBy the time we arrive at the party, most guests _______.will have leftwill leavewill be leavingare leaving
# 4เลือกประเภทSarah _______ her master's degree by this time next year.will finishwill be finishingwill have finishedfinishes