It was not until 1911, _______ the first vitamin was identified, _______ people realized the importance of it.
---- Oh no! We’re too late. The train _____ . ---- That’s OK. We’ll catch the next train to London.
Much disappointed as he is ________ in the job interview, he still keeps his confidence.
Home is ________ somebody notices when you are no longer there.
Most of the students in the Occupy Central movement in Hong Kong ______ have participated for more rights, but what they did caused serious effects on people’s living.
Two people in South Korea survived ________ by a sinkhole suddenly occurring in their courtyard.