问题
选择题
Since you are always working hard at your lessons, your efforts will ________.
A．pay off
B．pay for
C．pay back
D．pay out
答案
答案：A
A 考察动词短语辨析。Pay off还清，得到回报；pay for支付；pay back偿还；pay out付出。句义：既然你总说非常勤奋，你的努力总会得到回报的。