Only when early, enjoy the fresh air.
--- What happened to you?--- I was lost in the strange city; _______, it began to rain heavily.
Things came ______ after that. And now he has ______ student in Nanjing University.
Flight attendants usually need to arrive at the airport ______ before their flight leaves.
--- Who are you waiting for?--- ______ us a lecture this afternoon.
It was ______ he was part of Manchester United’s Youth Team, ______ won the FA Youth Cup in 1992, that David’s success started.