to do your homework again”—“Sorry, I ____ something else and didn’t hear yourassignment”

Not until he arrived home _____ he find that this wallet had been stolen.[ ]

________—Yes, I’m looking for a pen.

With the popularity of the Internet banking, it is becoming more convenient to ________ a business credit card for personal use online.

I got nervous when the woman _____ opposite kept staring at me [ ]