She still remembers Beijing University， ____________she graduated five years ago.

_____ did Li Ming jump in the long jump — About three meters.

Mom，may I play computer games just for a while—________！Dad is writing his paper

Though great progress has been made in astronomy in the past fifty years, ______ still much that remains mysterious to astronomers _______ the universe, even the solar system [ ]

missed the train!” “,there’ll be another in half an hour.”