I'm sorry to take up your valuable time. Although I now have some cs professional offer, but if you are willing to admit me to cs uw students, I will only select this.
I'm sorry to have taken up your precious time. Although I now have some csoffer, but if uw is willing to accept me as a cs major students, I will only choose.
I'm sorry to take up your precious time. Although I have some offers of CS major now, if UW is willing to admit me as a CS major student, I will only choose this option.