【2015•湖南】Always ________ in mind that your main task is to get this company running smoothly.

Only when Lily walked into the office ______ that she had left the contract at home.

【2015·湖南】Only after talking to two students ________ that having strong motivation is one of the biggest factors in reaching goals.

【2015·湖南】It was when we were returning home ________ I realized what a good feeling it was to have helped someone in trouble.

【2015·重庆】Bach died in 1750, but it was not until the early 19th century____ his musical gift was fully recognized.