—I'm sorry I didn't make it to your party last night. — __________. I know you're busy these days.
Dear me! Just _________ at the time! I _________ no idea it was so late.
Some of the exercises appear to be ________ ones that you have done, but after taking ________ second look, you will find that they are different.
Della sold her hair ___ her will.
Though Jim bought his wife a set of combs, ___ it was of no use.
At that time, Mr. Chang came to shake ___ with me.