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