Yeserday, when I was doing some quizs, I saw a sentence as follow:<br/><br/>a) I have taken a hot spring bath FOR many times.<br/><br/>b) I have taken a hot spring bath many times.<br/><br/>And, the correct answer goes to (B)<br/><br/>But one of the students in class said his teacher told them the answer (A) is also correct.<br/><br/>So, anyone can help me out with the answer (A)? Thanx!!