Attention, please. All of you students _______ remain in their seats until all the papers have been collected.

Would you consider ____your homework first before you go to the cinema? [ ]

______ , it was difficult for the stubborn young man to seek a perfect job.

untry’s population ______ small, andmost of its population ______ in the mountainous areas．

______ catch the early bus, John got up early today.