问题补充:
Li Fang is always ready to help others when they are in trouble and he nevertheir request.
A. turns up
B. turns over
C. turns in
D. turns down
答案:
A. turns up
B. turns over
C. turns in
(答案→)D. turns down
解析:短语辨析。A. 发生;开大 B. 翻阅;翻过来 C. 归还;上交 D. 调低;拒绝。句意:当他们遇到麻烦时,李方总是乐于帮助其他人,他从来不拒绝他们的要求。故选D。