You can e here to ask me if you have any questions.
A. at one time
B. at a time
C. at any time
D. all the time
网友回答
A. at one time
B. at a time
(答案→)C. at any time
D. all the time
解析:考查短语辨析,at one time 一度,曾经,at a time 一次,每次,at any time 在任何时候,all the time 一直,句意:如果你有问题的话任何时候你可以过来问我。故选C。