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By the time she finishes her homework, her parents ___________ for two hours

• have been sleeping
• were sleeping
• will have been sleeping
• had been sleeping

He ___________ the report by the time the manager asks for it

• completes
• will have completed
• completed
• has completed

While I ___________ on the project, my colleagues were attending a conference

• worked
• have worked
• was working
• had worked

She ___________ for the company for ten years before she decided to quit

• had been working
• has been working
• was working
• worked

They ___________ a new marketing strategy when the CEO announced a merger

• developed
• were developing
• have developed
• had developed

By next month, he ___________ at this job for a year

• will have been working
• has worked
• will be working
• has been working

After the meeting ___________, we discussed the new project

• finishes
• had finished
• was finished
• has finished

She ___________ to improve her skills by taking online courses

• had tried
• tries
• was trying
• has been trying

They ___________ the house for several months before they found a buyer

• had been renovating
• were renovating
• have been renovating
• renovated

By the end of the year, the company ___________ a significant profit

• will have made
• has made
• had made
• makes