It’s nearly seven o’clock. Jack ________ be here at any moment.
A．must B．need
C．should D．can
C。
nearly暗示“時間不早了”，“按理應當(should)”Jack“隨時(at any moment)”都有可能到達這里。must又語氣過強；can一般不用于肯定推測；need意義不通，也不用于肯定句。
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