问题
选择题
Life can be hard __________, but you must keep your head held high and stay positive. Never letanyone bring you down.
A．at all times
B．all the time
C．at a time
D．at times
答案
答案：D
题目分析：句意：生活有时可能是困难的，但你必须抬起头保持积极的态度。不要让任何人给你带来消沉。at all times总是，一直; 随时; 每时每刻; 平生; all the time at a time依次， 逐一， 每次;总是，一直；at times有时。所以选D。
