(2013·郑州二模)A college is going to ________ a student's ability based on grades and then make the decision to admit or refuse an applicant.

George has arrived, but I did not know he ______ until yesterday.

I ________ while reading the English textbook. Luckily, my roommate woke me up in time! 

— I will come to attend your lecture at 10:00 tomorrow. — I’m sorry, by then my lecture will have ended and I＿＿my guests in my office.

Barbara is easy to recognize as she’s the only one of the women who _____ evening dress.