Read the following text and answer the question.

Last Wednesday was a tiring day. I spent my time to do so many activities, that I had no time to take a rest. I didn’t think that Carlos was coming. (I) …, he told me that he was in Palembang.

Then, I went cycling with my other friend, Aldi. After that Aldi and I went to (II) … to attend the test until 3 pm. (III) … school, Aldi and I went to sport hall to play badminton until 8 pm. We played seriously and we felt tired (IV) … it.

What is the most suitable word to fill the blank in point (I)?