Not until the stadium of Bird’s nest was completed in the end ____back to their normal position.

While ____ the dog, you should take care not to get loose . Otherwise, it may be dangerous to strangers.

—— He promised to come to see you. —— But he ＿＿＿＿＿. I’ve been all alone. 

Only when I left my parents for Italy____ how much I loved them.

Only after they had discussed the matter for several hours ________ a decision.