1For the Turner sisters and their classmates，taking a parttime job might ______ their time for study.
A．cut off B．cut into
C．cut down D．cut away
解析：考查动词短语辨析。cut off“切断，切掉，剪下”；cut into“侵犯，打断”；cut down“削减，删节”；cut away“切掉，砍掉”。根据句意知应选C项。
答案：C
2—Perhaps John's not in.
—______.Look，the light's on.
A．Yes，he can be at home
B．No，he couldn't go out
C．Yes，he must be at home
D．No，he needn't go out
解析：由“Look，the light's on”可知他此刻一定在家里，所以用must be at home表示“对事情的肯定推测”。
