He________violinwhenIwanttosleep.
Generallywecoverinsuranee__definite(明确的)instructionsfromourclients.()
preferred,prefers,is,are,was,were,willbe,shallbeDuringtheholidayweek,one-thirdofthestudentsinourclass________preparedtostayoncampusforstudywhilearoundtenpercentofthem________somemoresleepathome.
They________extensiveandpossiblydangerousactualflighttraining.