问题补充:
—— Excuse me, is this Mr. Brown’s office?
—— I’m sorry, but Mr. Brown___works here.He left about three weeks ago.
A. not now
B. no more
C. not still
D. no longer
答案:
A. not now
B. no more
C. not still
(答案→)D. no longer
解析:no longer强调时间;no more强调数量和次数。